If you’re shopping for a King size mattress in Canada, you’ve probably noticed the same problem: everything claims to be the “best.” This guide cuts through the noise with our Top 10 picks based on in-store testing, verified specs, and real-world performance factors like cooling, motion transfer, response time, edge support, and durability.

King mattresses are often bought for couples, families, and anyone who wants room to sprawl—so we weight motion isolation and edge support more than we would for a Twin or Full. If you’re unsure what size you need, start with the mattress size guide. If you want a broader list, see our best mattresses in Canada roundup.

Quick take: If you want the best all-around option, start with Sealy Posturepedic Luxury 14.5" Medium Firm Hybrid Eurotop Mattress. It stood out for cooling + motion control, and it fits most couples and combo sleepers.

National Mattress editorial team

Top Pick: Sealy Posturepedic Luxury 14.5" Medium Firm Hybrid Eurotop Mattress (Best Overall)

Quick take: The most balanced King-size mattress in our current ranking—strong cooling, motion control, and edge support without an extreme feel.

Best for: Couples, combo sleepers, and hot sleepers
Firmness: 6/10 • Type: Hybrid • Height: 14.5 in
Price (King): $1,200 • Trial: 100 nights • Warranty: 10 Year Warranty
Overall score: 9.90 / 10

• ✅ Excellent temperature regulation and airflow for a King-size surface area
• ✅ Very low motion transfer for partner movement
• ✅ Strong edge support for spreading out (or sharing with kids/pets)

• ⚠️ If you want an ultra-plush “cloud” feel, choose a thicker pillow-top instead
• ⚠️ Like most new mattresses, plan for 24–72 hours of airing-out

PRICE: Check price for Sealy Posturepedic Luxury 14.5" Medium Firm Hybrid Eurotop Mattress → (View product page)

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The 10 Best King Size Mattresses in Canada (Our List)

1. Sealy Posturepedic Luxury 14.5" Medium Firm Hybrid Eurotop Mattress — Best Overall
2. Sealy Posturepedic Plus 1200 Series 15.5" Medium Firm Europillowtop Mattress — Best for Back Pain & Alignment
3. Serta Perfect Sleeper Premium 15" Firm Pillow Top Mattress — Best for Couples (Low Motion Transfer)
4. Chirofoam 12" Luxury Firm Hybrid Mattress — Best Value Under $1,000
5. Springwall Chiropractic 14" Firm Euro Top Mattress — Best for Heavy Sleepers
6. Serta Perfect Comfort X 15" Luxury Firm Super Pillow Top Mattress — Best Luxury Hotel Feel
7. Beautyrest 12.5" Tight Top Extra-firm Mattress — Best Extra-Firm Support
8. Beautyrest Centennial 14.5" Tight Top Medium-firm Mattress — Best Cooling Upgrade
9. Beautyrest Quintessence 15" Luxury Firm Pillow Top Mattress — Best Pressure Relief
10. Evergreen 100% Certified Organic 10" Firm Latex Mattress — Best Organic Latex

Want to browse by category? Shop all King mattresses, filter by hybrid, memory foam, or latex, or use the mattress selector.

Comparison Table (Top 10 at a Glance)

Note: Prices shown are for King size and may change. We update this page periodically.

Our Testing & Selection Process

What we evaluated

• Mattresses evaluated: 200+ mattresses from top legacy brands in Canada (Sealy, Serta, Beautyrest, Tempur-Pedic, Stearns & Foster, Kingsdown, Simmons and more) plus popular online brands.
• Key data points per mattress: materials + construction, firmness/feel, cooling, motion transfer, response time, edge support, odor/off-gassing, durability, warranty, and value.
• Brands included in this Top 10: Beautyrest, Chirofoam, Evergreen, Sealy, Serta, Springwall.
• Where to learn more: see how we test & score mattresses.

How we score King size mattresses

We score each mattress across 10 categories (0–10). Then we apply a King-size weighting that prioritizes partner-friendliness and long-term value:

1. Pressure Relief (14%)
2. Spinal Support & Alignment (14%)
3. Cooling & Breathability (11%)
4. Motion Transfer (11%)
5. Edge Support (7%)
6. Responsiveness & Ease of Movement (7%)
7. Odor & Off-gassing (4%)
8. Durability & Build Quality (12%)
9. Brand (6%)
10. Sleep Trial (4%)
11. Value (Price vs. build) (10%)

We use realistic expectations based on construction, materials, verified owner feedback, and in-store testing. Your results will vary by body type, base, and room temperature.

Minimum requirements to make this list

• Available in Canada in King size
• Fits one of the core types shoppers ask for most: memory foam, hybrid, or latex
• Meets our minimum bar for warranty and build consistency
• Earns an overall score high enough to compete (our 2026 Top 10 runs from ~9.9 down to 8.5)

Our Team / Editorial Standards

• Tested and reviewed by: Rafal Kieliszek, Mattress Manufacturing and Construction Expert
• Tested by: David Kurzawinski (Product Analyzer and Tester), Suraj Singh (Product Engineer and Component Tester)
• Policy: We do not accept paid placements for ranking positions. Pricing can change, so we refresh this list as deals and inventory shift.

Helpful policies: 100-night sleep trial • return policy • free express delivery • Canada-wide shipping (select models) • customer reviews.

The Top 10 Picks (Full Reviews)

Tip: Click any mattress name to jump to the full review.

• Sealy Posturepedic Luxury 14.5" Medium Firm Hybrid Eurotop Mattress — Best Overall
• Sealy Posturepedic Plus 1200 Series 15.5" Medium Firm Europillowtop Mattress — Best for Back Pain & Alignment
• Serta Perfect Sleeper Premium 15" Firm Pillow Top Mattress — Best for Couples (Low Motion Transfer)
• Chirofoam 12" Luxury Firm Hybrid Mattress — Best Value Under $1,000
• Springwall Chiropractic 14" Firm Euro Top Mattress — Best for Heavy Sleepers
• Serta Perfect Comfort X 15" Luxury Firm Super Pillow Top Mattress — Best Luxury Hotel Feel
• Beautyrest 12.5" Tight Top Extra-firm Mattress — Best Extra-Firm Support
• Beautyrest Centennial 14.5" Tight Top Medium-firm Mattress — Best Cooling Upgrade
• Beautyrest Quintessence 15" Luxury Firm Pillow Top Mattress — Best Pressure Relief
• Evergreen 100% Certified Organic 10" Firm Latex Mattress — Best Organic Latex

#1 Sealy Posturepedic Luxury 14.5" Medium Firm Hybrid Eurotop Mattress — Best Overall

Overall score: 9.90 / 10

Price (King): $1,200 • Type: Hybrid • Firmness: 6/10 • Height: 14.5 in
Trial: 100 nights • Warranty: 10 Year Warranty • Brand reputation: Est. 1881; Reputation: one of the best-known heritage brands (Posturepedic support focus); Quality history: generally strong, with better longevity in higher-tier Posturepedic/hybrid lines; Warranty: 10-year limited with online claim submission or retailer assistance; Availability: very broad-carried by major national chains (e.g., Mattress Firm's 2,300+ stores) plus many independents.

View product page

Best For

• ✅ Couples who want low motion transfer and a more stable edge
• ✅ Hot sleepers who need better airflow and a cooler surface feel
• ✅ Side sleepers chasing pressure relief at the shoulders and hips

Considerations

• ⚠️ More sink-in feel than a traditional innerspring (expect a “hug”)

Our Verdict

Sealy Posturepedic Luxury 14.5" Medium Firm Hybrid Eurotop Mattress is a hybrid built for King-size sleepers who want a medium feel. Up top you’ll find sealycool™ fabric paired with 1" gelsense™ max memory foam + 2" sealysupport™ gel hd foam + 1" sealysupport™ hd foam for surface comfort and pressure relief.

Underneath, the support system (½" smartlatex™ + zoned pocket coil support + solidedge™ pro coil edge) is designed to keep your spine aligned—especially helpful for back sleepers and anyone who wakes up stiff. If you share the bed, its motion isolation (10.0/10) helps reduce partner disturbance in a larger King footprint.

In our rubric it stood out for cooling (10.0/10), edge support (10.0/10), and pressure relief (10.0/10). Value-wise, it scores 9.1/10 once we factor in King pricing, materials, and warranty—so you’re not paying luxury money for average performance.

Skip it if you want an ultra-plush, cloud-like sink or if you’re chasing the absolute cheapest King. Otherwise, it’s an easy recommendation for shoppers who want a confident “set it and forget it” mattress.

Price: $1,200  |  Read more: Full specifications of Sealy Posturepedic Luxury 14.5" Medium Firm Hybrid Eurotop Mattress →

Performance Breakdown (Scores)

Test Notes

These numbers are realistic expectations based on construction, materials, verified owner feedback, and in-store testing. Your results will vary by body type, base, and room temperature.

• Sinkage depth: 2.55" (feel: deep)
• Bounce (total): 9.12 (higher = bouncier)
• Motion transfer duration: 0.98 seconds
• Response time: 0.47s mostly recovered / 0.74s fully recovered
• Max sinkage (deepest point): 3.89 inches
• Off-gassing: 1 day • initial smell: low

Specs

• Cover: SealyCool™ Fabric
• Comfort layers: 1" GelSense™ MAX Memory Foam + 2" SealySupport™ Gel HD Foam + 1" SealySupport™ HD Foam
• Support core: ½" SmartLatex™ + Zoned Pocket Coil Support + SolidEdge™ PRO Coil Edge
• Coils: SealyMAX™ Core System featuring SealyResponse™ PRO & SolidSupport™ Pocket Coils • count: 1,392 • gauge: 13 3/4
• Reinforced edge: Yes
• Notable features: Cooling Technology, Temperature Regulating, Breathable, Low Motion Transfer, Pressure Point Relief, Zoned Lumbar Support
• Certifications: Fiberglass-free (learn about CertiPUR‑US, GREENGUARD, GOLS, and GOTS)
• Available firmness options (collection): Medium (options vary by model/stock in the Sealy® Posturepedic® Luxury lineup)
• Sizes: Single/Twin, Twin XL, Double/Full, Queen, King (availability may vary by model)

#2 Sealy Posturepedic Plus 1200 Series 15.5" Medium Firm Europillowtop Mattress — Best for Back Pain & Alignment

Overall score: 9.73 / 10

Price (King): $1,080 • Type: Eurotop/Pillowtop • Firmness: 6/10 • Height: 15.5 in
Trial: 100 nights • Warranty: 10 Year Warranty • Brand reputation: Est. 1881; Reputation: one of the best-known heritage brands (Posturepedic support focus); Quality history: generally strong, with better longevity in higher-tier Posturepedic/hybrid lines; Warranty: 10-year limited with online claim submission or retailer assistance; Availability: very broad-carried by major national chains (e.g., Mattress Firm's 2,300+ stores) plus many independents.

View product page

Best For

• ✅ Couples who want low motion transfer and a more stable edge
• ✅ Hot sleepers who need better airflow and a cooler surface feel
• ✅ Side sleepers chasing pressure relief at the shoulders and hips

Considerations

• ⚠️ More sink-in feel than a traditional innerspring (expect a “hug”)
• ⚠️ Allow a few days for initial off-gassing/air-out in a ventilated room

Our Verdict

Sealy Posturepedic Plus 1200 Series 15.5" Medium Firm Europillowtop Mattress is a eurotop/pillowtop built for King-size sleepers who want a medium feel. Up top you’ll find cleanprotect™ fabric paired with 1.5" sealycomfort™ hd foam + 4" sealycomfort™ gel hd foam for surface comfort and pressure relief.

Underneath, the support system (proback® plus quilt with targeted gelsense™ hd memory foam) is designed to keep your spine aligned—especially helpful for back sleepers and anyone who wakes up stiff. If you share the bed, its motion isolation (10.0/10) helps reduce partner disturbance in a larger King footprint.

In our rubric it stood out for cooling (10.0/10), edge support (10.0/10), and pressure relief (10.0/10). Value-wise, it scores 9.2/10 once we factor in King pricing, materials, and warranty—so you’re not paying luxury money for average performance.

Skip it if you want an ultra-plush, cloud-like sink or if you’re chasing the absolute cheapest King. Otherwise, it’s an easy recommendation for shoppers who want a confident “set it and forget it” mattress.

Price: $1,080  |  Read more: Full specifications of Sealy Posturepedic Plus 1200 Series 15.5" Medium Firm Europillowtop Mattress →

Performance Breakdown (Scores)

Test Notes

These numbers are realistic expectations based on construction, materials, verified owner feedback, and in-store testing. Your results will vary by body type, base, and room temperature.

• Sinkage depth: 2.68" (feel: very deep)
• Bounce (total): 8.41 (higher = bouncier)
• Motion transfer duration: 1.08 seconds
• Response time: 0.67s mostly recovered / 1.24s fully recovered
• Max sinkage (deepest point): 3.86 inches
• Off-gassing: 3 days • initial smell: low

Specs

• Cover: CleanProtect™ Fabric
• Comfort layers: 1.5" SealyComfort™ HD Foam + 4" SealyComfort™ Gel HD Foam
• Support core: PROBACK® Plus Quilt with Targeted GelSense™ HD Memory Foam
• Coils: Posture Grid® Coil System featuring PostureSense™ Nano Coils • count: 1,500 • gauge: 13 3/4
• Reinforced edge: Yes
• Notable features: Cooling Technology, Temperature Regulating, Breathable, Low Motion Transfer, Pressure Point Relief, Zoned Lumbar Support
• Certifications: Fiberglass-free (learn about CertiPUR‑US, GREENGUARD, GOLS, and GOTS)
• Available firmness options (collection): Medium (options vary by model/stock in the Sealy® Posturepedic® Plus lineup)
• Sizes: Single/Twin, Twin XL, Double/Full, Queen, King (availability may vary by model)

#3 Serta Perfect Sleeper Premium 15" Firm Pillow Top Mattress — Best for Couples (Low Motion Transfer)

Overall score: 9.42 / 10

Price (King): $1,064 • Type: Eurotop/Pillowtop • Firmness: 8/10 • Height: 15 in
Trial: 100 nights • Warranty: 10 Year Warranty • Brand reputation: Est. 1931; Reputation: major mainstream mattress brand with broad recognition across price tiers; Quality history: long-running Perfect Sleeper and frequent line refreshes; Warranty: typically 10-year limited with online warranty guidance and retailer/brand claim support; Availability: wide distribution-recent rollouts referenced 6,000+ retail store locations.

View product page

Best For

• ✅ Couples who want low motion transfer and a more stable edge
• ✅ Back sleepers focused on spinal alignment and lumbar support
• ✅ Heavier sleepers who prefer a firmer, more supportive feel

Considerations

• ⚠️ May feel too firm for lightweight side sleepers who want deep contouring
• ⚠️ More sink-in feel than a traditional innerspring (expect a “hug”)

Our Verdict

Serta Perfect Sleeper Premium 15" Firm Pillow Top Mattress is a eurotop/pillowtop built for King-size sleepers who want a firm feel. Up top you’ll find coolfeel fabric™ paired with 1” pillowsoft® foam + 1/2” serta® support foam + 1” cool twist® gel memory foam for surface comfort and pressure relief.

Underneath, the support system (3” serta® support foam + 1” pillowsoft® foam + 1/2” serta® balanced support pad) is designed to keep your spine aligned—especially helpful for back sleepers and anyone who wakes up stiff. If you share the bed, its motion isolation (10.0/10) helps reduce partner disturbance in a larger King footprint.

In our rubric it stood out for cooling (9.3/10), edge support (10.0/10), and pressure relief (10.0/10). Value-wise, it scores 9.2/10 once we factor in King pricing, materials, and warranty—so you’re not paying luxury money for average performance.

Skip it if you want an ultra-plush, cloud-like sink or if you’re chasing the absolute cheapest King. Otherwise, it’s an easy recommendation for shoppers who want a confident “set it and forget it” mattress.

Price: $1,064  |  Read more: Full specifications of Serta Perfect Sleeper Premium 15" Firm Pillow Top Mattress →

Performance Breakdown (Scores)

Test Notes

These numbers are realistic expectations based on construction, materials, verified owner feedback, and in-store testing. Your results will vary by body type, base, and room temperature.

• Sinkage depth: 2.51" (feel: deep)
• Bounce (total): 7.83 (higher = bouncier)
• Motion transfer duration: 1.03 seconds
• Response time: 0.61s mostly recovered / 1.24s fully recovered
• Max sinkage (deepest point): 4.14 inches
• Off-gassing: 2 days • initial smell: low

Specs

• Cover: CoolFeel Fabric™
• Comfort layers: 1” PillowSoft® Foam + 1/2” Serta® Support Foam + 1” Cool Twist® Gel Memory Foam
• Support core: 3” Serta® Support Foam + 1” PillowSoft® Foam + 1/2” Serta® Balanced Support Pad
• Coils: 1000 Series 3-Zoned Coil System • count: 1,292 • gauge: 16/15.5/16
• Reinforced edge: Yes
• Notable features: Cooling Technology, Temperature Regulating, Breathable, Low Motion Transfer, Pressure Point Relief, Zoned Lumbar Support
• Certifications: Fiberglass-free (learn about CertiPUR‑US, GREENGUARD, GOLS, and GOTS)
• Available firmness options (collection): Firm (options vary by model/stock in the Serta® Perfect Sleeper® lineup)
• Sizes: Single/Twin, Twin XL, Double/Full, Queen, King (availability may vary by model)

#4 Chirofoam 12" Luxury Firm Hybrid Mattress — Best Value Under $1,000

Overall score: 9.36 / 10

Price (King): $800 • Type: Hybrid • Firmness: 8/10 • Height: 12 in
Trial: 100 nights • Warranty: 15 Year Warranty • Brand reputation: Est. 2015; Reputation: Canadian chiropractor-informed foam/hybrid brand positioned around orthopedic support; Quality history: supportive designs emphasizing pressure relief and sag resistance; Warranty: 15-year limited (prorated) with brand-direct support and a straightforward online process; Availability: limited physical retail-locations page lists 3 Ontario showrooms/partner locations, plus Canada/US direct shipping.

View product page

Best For

• ✅ Couples who want low motion transfer and a more stable edge
• ✅ Hot sleepers who need better airflow and a cooler surface feel
• ✅ Back sleepers focused on spinal alignment and lumbar support

Considerations

• ⚠️ May feel too firm for lightweight side sleepers who want deep contouring

Our Verdict

Chirofoam 12" Luxury Firm Hybrid Mattress is a hybrid built for King-size sleepers who want a firm feel. Up top you’ll find cotton top with durable denim borders. paired with 1″ cool gel infused 4lb visco memory foam for surface comfort and pressure relief.

Underneath, the support system (1 1/2″ firm support chirofoam + pro lumbar support) is designed to keep your spine aligned—especially helpful for back sleepers and anyone who wakes up stiff. If you share the bed, its motion isolation (10.0/10) helps reduce partner disturbance in a larger King footprint.

In our rubric it stood out for cooling (10.0/10), edge support (10.0/10), and pressure relief (10.0/10). Value-wise, it scores 9.5/10 once we factor in King pricing, materials, and warranty—so you’re not paying luxury money for average performance.

Skip it if you want a thick, ultra-luxury pillow-top look. If you want strong specs and a supportive feel under $1,000 (King), this is the value play.

Price: $800  |  Read more: Full specifications of Chirofoam 12" Luxury Firm Hybrid Mattress →

Performance Breakdown (Scores)

Test Notes

These numbers are realistic expectations based on construction, materials, verified owner feedback, and in-store testing. Your results will vary by body type, base, and room temperature.

• Sinkage depth: 2.04" (feel: moderate)
• Bounce (total): 9.95 (higher = bouncier)
• Motion transfer duration: 1.00 seconds
• Response time: 0.35s mostly recovered / 0.64s fully recovered
• Max sinkage (deepest point): 3.09 inches
• Off-gassing: 1 day • initial smell: low

Specs

• Cover: Cotton top with durable denim borders.
• Comfort layers: 1″ Cool Gel Infused 4lb Visco Memory Foam
• Support core: 1 1/2″ Firm Support Chirofoam + Pro Lumbar Support
• Coils: 1000 Series High Loft Pocket Coils with Bio Foam Encasement • count: 1,320 • gauge: 13 3/4
• Reinforced edge: Yes
• Notable features: Cooling Technology, Temperature Regulating, Breathable, Low Motion Transfer, Pressure Point Relief, Zoned Lumbar Support
• Certifications: Fiberglass-free (learn about CertiPUR‑US, GREENGUARD, GOLS, and GOTS)
• Available firmness options (collection): Firm (options vary by model/stock in the Chirofoam® Performance™ Hybrid lineup)
• Sizes: Single/Twin, Twin XL, Double/Full, Queen, King (availability may vary by model)

#5 Springwall Chiropractic 14" Firm Euro Top Mattress — Best for Heavy Sleepers

Overall score: 9.27 / 10

Price (King): $900 • Type: Eurotop/Pillowtop • Firmness: 9/10 • Height: 14 in
Trial: 100 nights • Warranty: 10 Year Warranty • Brand reputation: Est. 1949; Reputation: Canadian family-owned manufacturer known for durable coil/hybrid value; Quality history: long Canadian manufacturing heritage with focus on durability; Warranty: typically initiated through the original retailer (receipt + service request); Availability: broad Canadian dealer network-dealer locator lists ~741 retail partner locations.

View product page

Best For

• ✅ Couples who want low motion transfer and a more stable edge
• ✅ Hot sleepers who need better airflow and a cooler surface feel
• ✅ Back sleepers focused on spinal alignment and lumbar support

Considerations

• ⚠️ May feel too firm for lightweight side sleepers who want deep contouring

Our Verdict

Springwall Chiropractic 14" Firm Euro Top Mattress is a eurotop/pillowtop built for King-size sleepers who want a extra firm feel. Up top you’ll find cold pe technology premium surface fabric paired with high density firm bio comfort foam with graphite gel pcm + airways™ specialty foam for surface comfort and pressure relief.

Underneath, the support system (bio comfort foam + 2 x ½” polyfibre pad + micro coils) is designed to keep your spine aligned—especially helpful for back sleepers and anyone who wakes up stiff. If you share the bed, its motion isolation (9.0/10) helps reduce partner disturbance in a larger King footprint.

In our rubric it stood out for cooling (10.0/10), edge support (10.0/10), and pressure relief (10.0/10). Value-wise, it scores 9.4/10 once we factor in King pricing, materials, and warranty—so you’re not paying luxury money for average performance.

Skip it if you want an ultra-plush, cloud-like sink or if you’re chasing the absolute cheapest King. Otherwise, it’s an easy recommendation for shoppers who want a confident “set it and forget it” mattress.

Price: $900  |  Read more: Full specifications of Springwall Chiropractic 14" Firm Euro Top Mattress →

Performance Breakdown (Scores)

Test Notes

These numbers are realistic expectations based on construction, materials, verified owner feedback, and in-store testing. Your results will vary by body type, base, and room temperature.

• Sinkage depth: 1.84" (feel: minimal)
• Bounce (total): 11.76 (higher = bouncier)
• Motion transfer duration: 1.11 seconds
• Response time: 0.47s mostly recovered / 0.79s fully recovered
• Max sinkage (deepest point): 2.75 inches
• Off-gassing: 2 days • initial smell: low

Specs

• Cover: Cold PE Technology Premium Surface Fabric
• Comfort layers: High Density Firm Bio Comfort Foam with Graphite Gel PCM + AIRWAYS™ Specialty Foam
• Support core: Bio Comfort Foam + 2 x ½” PolyFibre Pad + Micro Coils
• Coils: 1800 7-Zoned Pocket Coil with Micro Coils • count: 2,280 • gauge: 13 3/4
• Reinforced edge: Yes
• Notable features: Cooling Technology, Temperature Regulating, Breathable, Low Motion Transfer, Pressure Point Relief, Zoned Lumbar Support
• Certifications: Fiberglass-free (learn about CertiPUR‑US, GREENGUARD, GOLS, and GOTS)
• Available firmness options (collection): Extra Firm (options vary by model/stock in the Springwall® Chiropractic® lineup)
• Sizes: Single/Twin, Twin XL, Double/Full, Queen, King (availability may vary by model)

#6 Serta Perfect Comfort X 15" Luxury Firm Super Pillow Top Mattress — Best Luxury Hotel Feel

Overall score: 9.09 / 10

Price (King): $1,770 • Type: Eurotop/Pillowtop • Firmness: 8/10 • Height: 15 in
Trial: 100 nights • Warranty: 10 Year Warranty • Brand reputation: Est. 1931; Reputation: major mainstream mattress brand with broad recognition across price tiers; Quality history: long-running Perfect Sleeper and frequent line refreshes; Warranty: typically 10-year limited with online warranty guidance and retailer/brand claim support; Availability: wide distribution-recent rollouts referenced 6,000+ retail store locations.

View product page

Best For

• ✅ Couples who want low motion transfer and a more stable edge
• ✅ Hot sleepers who need better airflow and a cooler surface feel
• ✅ Back sleepers focused on spinal alignment and lumbar support

Considerations

• ⚠️ May feel too firm for lightweight side sleepers who want deep contouring
• ⚠️ More sink-in feel than a traditional innerspring (expect a “hug”)
• ⚠️ Allow a few days for initial off-gassing/air-out in a ventilated room

Our Verdict

Serta Perfect Comfort X 15" Luxury Firm Super Pillow Top Mattress is a eurotop/pillowtop built for King-size sleepers who want a firm feel. Up top you’ll find coolfeel fabric™ paired with 1" perfect conform™ graphite memory foam + 1" cool twist® gel memory foam + 1” serta® support foam for surface comfort and pressure relief.

Underneath, the support system (1/2” serta® support foam + innerpanel + 1/2” serta® support foam + 1" perfect conform™ micro coils + 1/2” serta® support foam + 1/2” serta® balanced support foam) is designed to keep your spine aligned—especially helpful for back sleepers and anyone who wakes up stiff. If you share the bed, its motion isolation (10.0/10) helps reduce partner disturbance in a larger King footprint.

In our rubric it stood out for cooling (10.0/10), edge support (10.0/10), and pressure relief (10.0/10). Value-wise, it scores 8.5/10 once we factor in King pricing, materials, and warranty—so you’re not paying luxury money for average performance.

Skip it if you want an ultra-plush, cloud-like sink or if you’re chasing the absolute cheapest King. Otherwise, it’s an easy recommendation for shoppers who want a confident “set it and forget it” mattress.

Price: $1,770  |  Read more: Full specifications of Serta Perfect Comfort X 15" Luxury Firm Super Pillow Top Mattress →

Performance Breakdown (Scores)

Test Notes

These numbers are realistic expectations based on construction, materials, verified owner feedback, and in-store testing. Your results will vary by body type, base, and room temperature.

• Sinkage depth: 2.58" (feel: deep)
• Bounce (total): 8.08 (higher = bouncier)
• Motion transfer duration: 0.97 seconds
• Response time: 0.80s mostly recovered / 1.59s fully recovered
• Max sinkage (deepest point): 3.95 inches
• Off-gassing: 3 days • initial smell: low

Specs

• Cover: CoolFeel Fabric™
• Comfort layers: 1" Perfect Conform™ Graphite Memory Foam + 1" Cool Twist® Gel Memory Foam + 1” Serta® Support Foam
• Support core: 1/2” Serta® Support Foam + Innerpanel + 1/2” Serta® Support Foam + 1" Perfect Conform™ Micro Coils + 1/2” Serta® Support Foam + 1/2” Serta® Balanced Support Foam
• Coils: 2550 Series 5 ZoneActive™Pocket Coil System (8") • count: 3,230 • gauge: 16/15.5/16
• Reinforced edge: Yes
• Notable features: Cooling Technology, Temperature Regulating, Breathable, Low Motion Transfer, Pressure Point Relief, Zoned Lumbar Support
• Certifications: Fiberglass-free (learn about CertiPUR‑US, GREENGUARD, GOLS, and GOTS)
• Available firmness options (collection): Firm (options vary by model/stock in the Serta® Perfect Comfort X™ lineup)
• Sizes: Single/Twin, Twin XL, Double/Full, Queen, King (availability may vary by model)

#7 Beautyrest 12.5" Tight Top Extra-firm Mattress — Best Extra-Firm Support

Overall score: 9.08 / 10

Price (King): $900 • Type: Traditional - Tight-Top • Firmness: 9/10 • Height: 12.5 in
Trial: 100 nights • Warranty: 10 Year Warranty • Brand reputation: Est. 1925; Reputation: legacy Simmons brand known for pocketed-coil innerspring & hybrids; Quality history: ranges from entry to premium-best durability typically in higher-tier collections; Warranty: centralized Serta Simmons online claim form (step-by-step, ~10 min) or retailer-assisted; Availability: wide North American distribution-recent rollouts targeted 6,000+ retail store locations.

View product page

Best For

• ✅ Couples who want low motion transfer and a more stable edge
• ✅ Hot sleepers who need better airflow and a cooler surface feel
• ✅ Back sleepers focused on spinal alignment and lumbar support

Considerations

• ⚠️ May feel too firm for lightweight side sleepers who want deep contouring
• ⚠️ Allow a few days for initial off-gassing/air-out in a ventilated room

Our Verdict

Beautyrest 12.5" Tight Top Extra-firm Mattress is a traditional - tight-top built for King-size sleepers who want a extra firm feel. Up top you’ll find infinicool™ technology cooling sleep surface paired with 1/2" beautyrest® activeresponse memory foam + 1/2" surfacetouch™ gel memory foam for surface comfort and pressure relief.

Underneath, the support system (3" beautyrest® extra firm gel foam + 1/2" beautyrest® support foam + 1/2" beautyrest® support foam) is designed to keep your spine aligned—especially helpful for back sleepers and anyone who wakes up stiff. If you share the bed, its motion isolation (9.0/10) helps reduce partner disturbance in a larger King footprint.

In our rubric it stood out for cooling (10.0/10), edge support (10.0/10), and pressure relief (9.3/10). Value-wise, it scores 9.4/10 once we factor in King pricing, materials, and warranty—so you’re not paying luxury money for average performance.

Skip it if you want an ultra-plush, cloud-like sink or if you’re chasing the absolute cheapest King. Otherwise, it’s an easy recommendation for shoppers who want a confident “set it and forget it” mattress.

Price: $900  |  Read more: Full specifications of Beautyrest 12.5" Tight Top Extra-firm Mattress →

Performance Breakdown (Scores)

Test Notes

These numbers are realistic expectations based on construction, materials, verified owner feedback, and in-store testing. Your results will vary by body type, base, and room temperature.

• Sinkage depth: 1.71" (feel: minimal)
• Bounce (total): 10.26 (higher = bouncier)
• Motion transfer duration: 1.01 seconds
• Response time: 0.42s mostly recovered / 0.89s fully recovered
• Max sinkage (deepest point): 2.50 inches
• Off-gassing: 3 days • initial smell: low

Specs

• Cover: InfiniCool™ Technology Cooling Sleep Surface
• Comfort layers: 1/2" Beautyrest® ActiveResponse Memory Foam + 1/2" SurfaceTouch™ Gel Memory Foam
• Support core: 3" Beautyrest® Extra Firm Gel Foam + 1/2" Beautyrest® Support Foam + 1/2" Beautyrest® Support Foam
• Coils: 875 Pocketed Coil® Technology • count: 1,110 • gauge: 13 3/4
• Reinforced edge: Yes
• Notable features: Cooling Technology, Temperature Regulating, Breathable, Low Motion Transfer, Pressure Point Relief, Edge Support
• Certifications: Fiberglass-free (learn about CertiPUR‑US, GREENGUARD, GOLS, and GOTS)
• Available firmness options (collection): Extra Firm (options vary by model/stock in the Beautyrest® Classic lineup)
• Sizes: Single/Twin, Twin XL, Double/Full, Queen, King (availability may vary by model)

#8 Beautyrest Centennial 14.5" Tight Top Medium-firm Mattress — Best Cooling Upgrade

Overall score: 8.61 / 10

Price (King): $2,800 • Type: Traditional - Tight-Top • Firmness: 6/10 • Height: 14.5 in
Trial: 100 nights • Warranty: 10 Year Warranty • Brand reputation: Est. 1925; Reputation: legacy Simmons brand known for pocketed-coil innerspring & hybrids; Quality history: ranges from entry to premium-best durability typically in higher-tier collections; Warranty: centralized Serta Simmons online claim form (step-by-step, ~10 min) or retailer-assisted; Availability: wide North American distribution-recent rollouts targeted 6,000+ retail store locations.

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Best For

• ✅ Couples who want low motion transfer and a more stable edge
• ✅ Hot sleepers who need better airflow and a cooler surface feel
• ✅ Back sleepers focused on spinal alignment and lumbar support

Considerations

• ⚠️ Premium price—best if you’ll keep it long-term and value higher-end materials

Our Verdict

Beautyrest Centennial 14.5" Tight Top Medium-firm Mattress is a traditional - tight-top built for King-size sleepers who want a medium feel. Up top you’ll find sleep climate™ surface enhanced with cooling yarn paired with 1" self-response™ latex + 1" micro diamond™ memory foam + 1" beautyrest® gel comfort foam for surface comfort and pressure relief.

Underneath, the support system (1" beautyrest® support foam) is designed to keep your spine aligned—especially helpful for back sleepers and anyone who wakes up stiff. If you share the bed, its motion isolation (10.0/10) helps reduce partner disturbance in a larger King footprint.

In our rubric it stood out for cooling (10.0/10), edge support (10.0/10), and pressure relief (9.3/10). Value-wise, it scores 7.2/10 once we factor in King pricing, materials, and warranty—so you’re not paying luxury money for average performance.

Skip it if you want an ultra-plush, cloud-like sink or if you’re chasing the absolute cheapest King. Otherwise, it’s an easy recommendation for shoppers who want a confident “set it and forget it” mattress.

Price: $2,800  |  Read more: Full specifications of Beautyrest Centennial 14.5" Tight Top Medium-firm Mattress →

Performance Breakdown (Scores)

Test Notes

These numbers are realistic expectations based on construction, materials, verified owner feedback, and in-store testing. Your results will vary by body type, base, and room temperature.

• Sinkage depth: 2.21" (feel: moderate)
• Bounce (total): 9.80 (higher = bouncier)
• Motion transfer duration: 1.06 seconds
• Response time: 0.40s mostly recovered / 0.74s fully recovered
• Max sinkage (deepest point): 3.08 inches
• Off-gassing: 2 days • initial smell: low

Specs

• Cover: Sleep Climate™ Surface enhanced with cooling yarn
• Comfort layers: 1" Self-Response™ Latex + 1" Micro Diamond™ Memory Foam + 1" Beautyrest® Gel Comfort Foam
• Support core: 1" Beautyrest® Support Foam
• Coils: 2850 T3 Triple Stranded Pocketed Coil® and Micro Coil Technology • count: 3,610 • gauge: 13 3/4
• Reinforced edge: Yes
• Notable features: Cooling Technology, Temperature Regulating, Breathable, Low Motion Transfer, Pressure Point Relief, Edge Support
• Certifications: Fiberglass-free (learn about CertiPUR‑US, GREENGUARD, GOLS, and GOTS)
• Available firmness options (collection): Medium (options vary by model/stock in the Beautyrest® Centennial lineup)
• Sizes: Single/Twin, Twin XL, Double/Full, Queen, King (availability may vary by model)

#9 Beautyrest Quintessence 15" Luxury Firm Pillow Top Mattress — Best Pressure Relief

Overall score: 8.59 / 10

Price (King): $1,870 • Type: Eurotop/Pillowtop • Firmness: 8/10 • Height: 15 in
Trial: 100 nights • Warranty: 10 Year Warranty • Brand reputation: Est. 1925; Reputation: legacy Simmons brand known for pocketed-coil innerspring & hybrids; Quality history: ranges from entry to premium-best durability typically in higher-tier collections; Warranty: centralized Serta Simmons online claim form (step-by-step, ~10 min) or retailer-assisted; Availability: wide North American distribution-recent rollouts targeted 6,000+ retail store locations.

View product page

Best For

• ✅ Couples who want low motion transfer and a more stable edge
• ✅ Hot sleepers who need better airflow and a cooler surface feel
• ✅ Back sleepers focused on spinal alignment and lumbar support

Considerations

• ⚠️ May feel too firm for lightweight side sleepers who want deep contouring

Our Verdict

Beautyrest Quintessence 15" Luxury Firm Pillow Top Mattress is a eurotop/pillowtop built for King-size sleepers who want a firm feel. Up top you’ll find wintercool™ fabric treatment paired with wintercool™ carbon foam + geltouch® foam + beautyrest® plush quilt foam for surface comfort and pressure relief.

Underneath, the support system (t3 precision support system™ with beautyedge® firm comfort foam) is designed to keep your spine aligned—especially helpful for back sleepers and anyone who wakes up stiff. If you share the bed, its motion isolation (9.0/10) helps reduce partner disturbance in a larger King footprint.

In our rubric it stood out for cooling (10.0/10), edge support (10.0/10), and pressure relief (9.3/10). Value-wise, it scores 8.3/10 once we factor in King pricing, materials, and warranty—so you’re not paying luxury money for average performance.

Skip it if you want an ultra-plush, cloud-like sink or if you’re chasing the absolute cheapest King. Otherwise, it’s an easy recommendation for shoppers who want a confident “set it and forget it” mattress.

Price: $1,870  |  Read more: Full specifications of Beautyrest Quintessence 15" Luxury Firm Pillow Top Mattress →

Performance Breakdown (Scores)

Test Notes

These numbers are realistic expectations based on construction, materials, verified owner feedback, and in-store testing. Your results will vary by body type, base, and room temperature.

• Sinkage depth: 1.82" (feel: minimal)
• Bounce (total): 11.14 (higher = bouncier)
• Motion transfer duration: 1.12 seconds
• Response time: 0.47s mostly recovered / 0.79s fully recovered
• Max sinkage (deepest point): 2.75 inches
• Off-gassing: 2 days • initial smell: low

Specs

• Cover: WinterCool™ Fabric Treatment
• Comfort layers: WinterCool™ Carbon Foam + GelTouch® Foam + Beautyrest® Plush Quilt Foam
• Support core: T3 Precision Support System™ with BeautyEdge® Firm Comfort Foam
• Coils: T3 Beautyrest® Pocketed Coil Technology • count: 1,320 • gauge: 13 3/4
• Reinforced edge: Yes
• Notable features: Cooling Technology, Temperature Regulating, Breathable, Low Motion Transfer, Pressure Point Relief, Edge Support
• Certifications: Fiberglass-free (learn about CertiPUR‑US, GREENGUARD, GOLS, and GOTS)
• Available firmness options (collection): Firm (options vary by model/stock in the Beautyrest® Quintessence™ lineup)
• Sizes: Single/Twin, Twin XL, Double/Full, Queen, King (availability may vary by model)

#10 Evergreen 100% Certified Organic 10" Firm Latex Mattress — Best Organic Latex

Overall score: 8.50 / 10

Price (King): $2,510 • Type: Latex • Firmness: 8/10 • Height: 10 in
Trial: 100 nights • Warranty: 15 Year Warranty • Brand reputation: Est. 2015; Reputation: Canadian organic-latex focused brand with chiropractor-oriented ergonomics; Quality history: latex-forward builds (typically durable and breathable) with natural/organic materials positioning; Warranty: 15-year limited (prorated) with brand-direct support; Availability: limited physical retail locations page lists some Ontario showrooms/partner locations, plus Canada/US direct shipping.

View product page

Best For

• ✅ Couples who want low motion transfer and a more stable edge
• ✅ Hot sleepers who need better airflow and a cooler surface feel
• ✅ Back sleepers focused on spinal alignment and lumbar support

Considerations

• ⚠️ May feel too firm for lightweight side sleepers who want deep contouring
• ⚠️ Premium price—best if you’ll keep it long-term and value higher-end materials

Our Verdict

Evergreen 100% Certified Organic 10" Firm Latex Mattress is a firm latex option for shoppers who want a cleaner, more buoyant feel than memory foam. Latex tends to sleep cooler and stays responsive, which is great for combination sleepers.

Underneath, the support system (6″ zoned 100% natural organic latex) is designed to keep your spine aligned—especially helpful for back sleepers and anyone who wakes up stiff. If you share the bed, its motion isolation (10.0/10) helps reduce partner disturbance in a larger King footprint.

In our rubric it stood out for cooling (10.0/10), edge support (10.0/10), and pressure relief (10.0/10). Value-wise, it scores 7.6/10 once we factor in King pricing, materials, and warranty—so you’re not paying luxury money for average performance.

Skip it if you want an ultra-plush, cloud-like sink or if you’re chasing the absolute cheapest King. Otherwise, it’s an easy recommendation for shoppers who want a confident “set it and forget it” mattress.

Price: $2,510  |  Read more: Full specifications of Evergreen 100% Certified Organic 10" Firm Latex Mattress →

Performance Breakdown (Scores)

Test Notes

These numbers are realistic expectations based on construction, materials, verified owner feedback, and in-store testing. Your results will vary by body type, base, and room temperature.

• Sinkage depth: 1.75" (feel: minimal)
• Bounce (total): 9.38 (higher = bouncier)
• Motion transfer duration: 0.97 seconds
• Response time: 0.22s mostly recovered / 0.32s fully recovered
• Max sinkage (deepest point): 3.57 inches
• Off-gassing: 2 days • initial smell: low

Specs

• Cover: Organic Cotton
• Comfort layers: 1″ 100% Natural Organic Latex
• Support core: 6″ Zoned 100% Natural Organic Latex
• Coils: N/A
• Reinforced edge: No
• Notable features: Temperature Regulating, Breathable, Low Motion Transfer, Pressure Point Relief, Zoned Lumbar Support, Edge Support
• Certifications: Fiberglass-free (learn about CertiPUR‑US, GREENGUARD, GOLS, and GOTS)
• Available firmness options (collection): Firm (options vary by model/stock in the Evergreen® Pure™ lineup)
• Sizes: Single/Twin, Twin XL, Double/Full, Queen, King (availability may vary by model)

Honorable Mentions (Still Great in King)

These didn’t crack the Top 10 once we applied our King-size weighting and value adjustments, but they’re still strong options depending on feel, budget, or brand preference.

• Sealy Posturepedic Natural Origins 16" Plush Euro Top Latex Mattress — $1,320 (King) • Eurotop/Pillowtop • 3/10 firmness
• Beautyrest Beautysleep 12.5" Medium Firm Pillow Top Mattress — $890 (King) • Eurotop/Pillowtop • 6/10 firmness
• Beautyrest World Class 15.5" Pillow Top Medium-firm Mattress — $1,340 (King) • Eurotop/Pillowtop • 6/10 firmness
• Chirofoam XF 10" Extra-firm Memory Foam Mattress — $900 (King) • Memory Foam • 9/10 firmness
• Sealy Posturepedic 800 Series 11.5" Firm Tight Top Mattress — $720 (King) • Traditional - Tight-Top • 8/10 firmness
• Stearns & Foster Lux Estate 17" Plush Europillowtop Mattress — $3,370 (King) • Eurotop/Pillowtop • 3/10 firmness
• Springwall Chiro Medic 9.5" Plush Eurotop Mattress — $390 (King) • Eurotop/Pillowtop • 3/10 firmness
• Evergreen 10" Firm Organic Latex Foam Mattress — $790 (King) • Latex • 8/10 firmness
• Springwall H2 Black Chiropractic 16" Ultra Plush Hybrid Mattress — $2,400 (King) • Hybrid • 3/10 firmness
• Stearns & Foster Estate 13.5" Firm Tight Top Mattress — $2,320 (King) • Traditional - Tight-Top • 8/10 firmness
• Springwall HC Flippable 12" Medium Firm Euro Top Mattress — $700 (King) • Eurotop/Pillowtop • 6/10 firmness
• Serta Icomfort Pro 12.5" Firm Latex Mattress — $6,640 (King) • Memory Foam • 8/10 firmness
• NM Orthopedic Supreme 13" Firm Flippable Tight Top Mattress — $530 (King) • Traditional - Tight-Top • 8/10 firmness
• NM 12" Medium Firm Euro Top Mattress — $630 (King) • Eurotop/Pillowtop • 6/10 firmness
• Serta Icomfort 13" Medium Firm Memory Foam Mattress — $2,370 (King) • Memory Foam • 6/10 firmness
• Springwall Comfort Pockets 10.5" Extra-firm Euro-top Mattress — $500 (King) • Eurotop/Pillowtop • 9/10 firmness
• Serta Classic 11" Plush Euro Top Mattress — $630 (King) • Eurotop/Pillowtop • 3/10 firmness
• NM HD 10" Extra-firm Flippable High Density Foam Mattress — $630 (King) • Eurotop/Pillowtop • 9/10 firmness
• Springwall 8" Extra-firm Tight Top Foam Mattress — $500 (King) • Eurotop/Pillowtop • 9/10 firmness
• Tempur-pedic Tempur-luxealign 2.0 Orange 13" Firm Memory Foam Mattress — $4,930 (King) • Memory Foam • 8/10 firmness
• Tempur-pedic Tempur-align 2.0 Orange 11" Firm Memory Foam Mattress — $3,400 (King) • Memory Foam • 8/10 firmness
• Tempur-pedic Tempur-proalign 2.0 Teal 12" Medium Firm Memory Foam Mattress — $3,940 (King) • Memory Foam • 6/10 firmness
• Sealy Essentials 11.5" Firm Eurotop Mattress — $690 (King) • Eurotop/Pillowtop • 8/10 firmness
• Sealy Cocoon 10" Firm Memory Foam Mattress — $930 (King) • Memory Foam • 8/10 firmness
• NM 10″ Firm Memory Foam Mattress — $800 (King) • Memory Foam • 8/10 firmness
• Serta Modern Series 10" Extra-firm Gel Foam Mattress — $600 (King) • Memory Foam • 9/10 firmness
• Open Bag - Beautyrest 14" Pillow Top Firm Mattress — $779 (King) • Eurotop/Pillowtop • 8/10 firmness

Want more rankings? See Best Mattresses in Canada Rankings and our Best Overall Top 10 list.

Buyer’s Guide: How to Choose the Best King Size Mattress

1) Pick your firmness based on sleep position

• Side sleepers: typically 4–6/10 (more pressure relief at shoulders/hips)
• Back sleepers: typically 6–8/10 (balanced contour + support)
• Stomach sleepers: typically 7–9/10 (keep hips from dipping)
• Combo sleepers: prioritize responsiveness (easier to change positions)

More detail: firmness explained • how to choose the best mattress.

2) Cooling: what actually helps

For King mattresses (more surface area = more heat), look for breathable covers, open-cell foams, airflow from coils, and temperature-regulating materials. If you’re a warm sleeper, you’ll usually do best with a hybrid or latex build.

3) Pressure relief vs. ease of movement

Memory foam can feel “huggy” and reduce pressure points, but very deep sink can make it harder to move. If you change positions a lot, consider a hybrid or latex mattress for faster response and more bounce.

4) Couples: motion + edge support

If you share a King, prioritize motion isolation and edge support. Strong edges help you use the full sleep surface (especially if you’re both bigger sleepers, or if kids/pets sneak in). For more options built for partner comfort, browse mattresses for couples.

5) Back pain: support comes first

If you’re shopping for back pain, focus on spinal alignment, zoning/lumbar support, and a firmness that keeps your hips and shoulders level. You can also browse our mattresses for back pain category.

6) Policies that matter

Before you buy, check the warranty, trial length, and delivery options. National Mattress offers a 100-night sleep trial, plus free express delivery in many areas and Canada-wide shipping for select roll-packed models.

Finish your setup with a breathable protector and supportive base: mattress protectors, adjustable bases, and bed frames.

FAQs

What firmness is best for a King size mattress?

There’s no single “best,” but most couples land in the medium-to-firm range because it balances pressure relief and support. Side sleepers usually prefer a slightly softer feel; stomach sleepers often need firmer support to keep hips from sinking.

Are King mattresses good for back pain?

A King size doesn’t automatically help back pain, but it can improve sleep quality if you share the bed (less partner disturbance). For back pain, prioritize spinal alignment, zoning/lumbar support, and a firmness that keeps your hips and shoulders level.

How long do King mattresses last?

Most quality mattresses last around 7–10 years, depending on materials, body weight, and maintenance. Latex and well-built hybrids often hold up longer than low-density foams. Rotating the mattress (if recommended) and using a protector can extend lifespan.

Do these mattresses have fiberglass?

We flag models that are listed as fiberglass-free in verified specs. If this is a top concern, use the product page details and ask support before purchasing—materials can vary by batch or supplier.

Which pick is best for hot sleepers?

Our best cooling award goes to the mattress in spot #8, but any of the top hybrids and latex options near the top of this list are strong for temperature regulation. Start with #8 Beautyrest Centennial 14.5" Tight Top Medium-firm Mattress if you sleep warm.

Bottom Line

If you want the safest all-around choice, get Sealy Posturepedic Luxury 14.5" Medium Firm Hybrid Eurotop Mattress for its balanced feel, cooling, and partner-friendly performance.

If you’re on a budget, start with Chirofoam 12" Luxury Firm Hybrid Mattress (Best Value Under $1,000).

If you sleep hot, choose Beautyrest Centennial 14.5" Tight Top Medium-firm Mattress (Best Cooling Upgrade) or a latex option like Evergreen 100% Certified Organic 10" Firm Latex Mattress.