King Sealy® Posturepedic® Plus – Enhanced Support & Cooling Comfort Springwall® Chiropractic® Compatible with Adjustable Bed Temperature-Regulating Mattresses Mattress Selector

King mattresses measure 76" × 80" — the widest standard size, giving each partner the same personal space as a twin. They're the top choice for couples who want maximum room, families who co-sleep, and larger master bedrooms. Compare every king option below by brand, feel, and price.
Sealy® Posturepedic® Plus elevates the trusted Posturepedic support with enhanced features and luxury materials. Enjoy deeper pressure relief, sturdier coils, and cooling upgrades in this collection – perfect for Canadians seeking an upgraded sleep experience.
Springwall mattresses offer robust, targeted support for proper spinal alignment. Springwall Chiropractic® and the Canadian Memorial Chiropractic College (CMCC) have joined forces to improve the sleep of Canadians with a long-term funding agreement to aid the Research & Development with the purpose of maintaining and improving health through better sleep. Enjoy premium comfort and back care from a proudly Canadian-made mattress collection.
A temperature-regulating mattress works to keep you at a comfortable, balanced temperature all night and all year — not just cooling you down, but adapting as your body and the seasons change so you don't wake up too hot or too cold. These mattresses use heat-responsive and breathable materials — phase-change covers, gel and graphite foams, Tencel and natural fibres, and airflow-promoting coils — to absorb and release warmth as needed. It's ideal if you run hot and cold, share a bed with a partner who sleeps at a different temperature, or just want consistent comfort through every season. You'll find temperature-regulating builds across every brand — Sealy, Serta, Beautyrest, iComfort, Tempur-Pedic, Chirofoam and our own NM line. Sleep hot specifically? See our cooling mattresses. Every mattress includes a 365-night sleep trial and free delivery across Canada. • What it does: holds a balanced, neutral temperature — adapts so you're not too hot or too cold • How it works: phase-change covers, gel & graphite foams, Tencel/natural fibres and breathable coil airflow • Best for: people who run hot and cold, couples with different sleep temperatures, and year-round comfort • Cooling vs regulating: cooling sleeps cold (for hot sleepers); regulating holds a steady, balanced temp • Across every brand and firmness • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery
King Sealy® Posturepedic® Plus – Enhanced Support & Cooling Comfort Springwall® Chiropractic® Compatible with Adjustable Bed Temperature-Regulating Mattresses Mattress Selector

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Clear all King Sealy® Posturepedic® Plus Springwall® Chiropractic® Compatible with Adjustable Bed Temperature Regulating

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King Sealy® Posturepedic® Plus Springwall® Chiropractic® Compatible with Adjustable Bed Temperature Regulating Clear all
  • SPRINGWALL® Chiropractic® 11" Firm Tight-Top Mattress
    BEST IN CLASS TOP RATED TRENDING
    Springwall Chiropractic 11-inch firm tight-top mattress, navy swirl-pattern top, darker navy sides Springwall Chiropractic Premium Mattress Logo
    FIRM
    • 1800 7-Zoned Chiropractic® Pocket Coils
    • Cold PE Technology Premium Surface Fabric
    • Graphite Gel PCM Comfort Layers
    • CoreBalance™ Support System with Micro Coils
    • HD Bio Comfort Foams
    King In stock for fast delivery $907
    Compare at $1,999
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 18
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  • SPRINGWALL® Chiropractic® 11" Plush Tight-Top Mattress
    TOP RATED LIMITED STOCK
    Springwall Chiropractic 11-inch plush tight-top mattress, navy swirl-pattern top, banded navy sides Springwall Chiropractic Premium Mattress Logo
    PLUSH
    • 1800 7-Zoned Chiropractic® Pocket Coils
    • Cold PE Technology Premium Surface Fabric
    • Graphite Gel PCM Comfort Layers
    • CoreBalance™ Support System with Micro Coils
    • HD Bio Comfort Foams
    King In stock for fast delivery $907
    Compare at $1,999
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 18
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  • SPRINGWALL® Chiropractic® 12" Plush Hybrid Mattress
    BEST IN CLASS TOP RATED LIMITED STOCK
    Springwall Chiropractic 12-inch plush hybrid mattress, navy swirl-pattern top, banded navy sides Springwall Chiropractic Premium Mattress Logo
    PLUSH
    • 1800 7-Zoned Chiropractic® Pocket Coils
    • Cold PE Technology Premium Surface Fabric
    • Graphite Gel PCM Comfort Layers
    • CoreBalance™ Support System with Micro Coils
    • HD Bio Comfort Foams
    King In stock for fast delivery $972
    Compare at $2,099
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 18
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  • SPRINGWALL® Chiropractic® 12" Firm Hybrid Mattress
    BEST IN CLASS TRENDING LIMITED STOCK
    Springwall Chiropractic 12-inch firm hybrid mattress, navy swirl-pattern top, banded navy sides Springwall Chiropractic Premium Mattress Logo
    FIRM
    • 1800 7-Zoned Chiropractic® Pocket Coils
    • Cold PE Technology Premium Surface Fabric
    • Graphite Gel PCM Comfort Layers
    • CoreBalance™ Support System with Micro Coils
    • HD Bio Comfort Foams
    King In stock for fast delivery $972
    Compare at $2,099
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 18
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  • SEALY® Posturepedic® Plus 1000 Series 11.5" Firm Tight Top Mattress
    BEST IN CLASS TOP RATED TRENDING
    Sealy Posturepedic Plus 1000 Series 11.5-inch firm tight-top mattress, white-blue tufted top, light grey sides Sealy Posturepedic Plus Mattress Logo
    FIRM
    • CleanProtect™ Cover
    • SealyAir™ Fibres
    • CertiPUR-US™ SealyComfort™ Gel HD Foam
    • SealyResponse™ HD Pocket Coils
    • StableEdge™ HD
    • PROBACK® Quilt with Targeted GelBoost™ HD Memory Foam
    King $988
    Compare at $2,299
    Online availability icon In-Stock Only 3 left!
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  • SPRINGWALL® Chiropractic® 14" Plush Euro Top Mattress
    BEST IN CLASS TOP RATED LIMITED STOCK
    Springwall Chiropractic 14-inch plush euro-top mattress, navy swirl-quilted top, grey mesh sides Springwall Chiropractic Premium Mattress Logo
    PLUSH
    • 1800 7-Zoned Chiropractic® Pocket Coils
    • Cold PE Technology Premium Surface Fabric
    • AIRWAYS™ Specialty Foam
    • Graphite Gel PCM Comfort Layers
    • CoreBalance™ Support System with Micro Coils
    King In stock for fast delivery $1,068
    Compare at $2,199
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 18
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  • SPRINGWALL® Chiropractic® 14" Firm Euro Top Mattress
    BEST IN CLASS TOP RATED TRENDING
    Springwall Chiropractic 14-inch firm euro-top mattress, navy swirl-quilted top, grey mesh sides Springwall Chiropractic Premium Mattress Logo
    FIRM
    • 1800 7-Zoned Chiropractic® Pocket Coils
    • Cold PE Technology Premium Surface Fabric
    • AIRWAYS™ Specialty Foam
    • Graphite Gel PCM Comfort Layers
    • CoreBalance™ Support System with Micro Coils
    King In stock for fast delivery $1,068
    Compare at $2,199
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 18
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  • SEALY® Posturepedic Plus® 1000 Series 12.5" Medium Firm Euro Top Mattress
    BEST IN CLASS LIMITED STOCK
    Sealy Posturepedic Plus 1000 Series 12.5-inch medium-firm euro-top mattress, white-blue tufted top, grey sides Sealy Posturepedic Plus Mattress Logo
    MEDIUM
    • CleanProtect™ Cover
    • SealyAir™ Fibres
    • CertiPUR-US™ SealyComfort™ Gel HD Foam
    • SealyResponse™ HD Pocket Coils
    • StableEdge™ HD
    • PROBACK® Quilt with Targeted GelBoost™ HD Memory Foam
    King $1,117
    Compare at $2,599
    Online availability icon In-Stock Only 2 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 18
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  • SEALY® Posturepedic Plus® 1000 Series 14" Plush Europillowtop Mattress
    LIMITED STOCK
    Sealy Posturepedic Plus 1000 Series 14-inch plush euro-pillow-top mattress, domed white-blue top, grey sides Sealy Posturepedic Plus Mattress Logo
    PLUSH
    • CleanProtect™ Cover
    • SealyAir™ Fibres
    • CertiPUR-US™ SealyComfort™ Gel HD Foam
    • SealyResponse™ HD Pocket Coils
    • StableEdge™ HD
    • PROBACK® Quilt with Targeted GelBoost™ HD Memory Foam
    King $1,190
    Compare at $2,799
    Online availability icon In-Stock Only 3 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 18
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  • SEALY® Posturepedic Plus® 1200 Series 12" Firm Euro Top Mattress
    TOP RATED LIMITED STOCK
    Sealy Posturepedic Plus 1200 Series 12-inch firm euro-top mattress, rounded cream top, denim-blue sides Sealy Posturepedic Plus Mattress Logo
    FIRM
    • CleanProtect™ Cover
    • Sealy AirSense™ Fibres Topped with SealyIce™ Yarn
    • CertiPUR-US™ SealyComfort™ Gel HD Foam
    • Posture Grid® Coil System featuring PostureSense™ Nano Coils
    • SolidEdge™ PRO
    • PROBACK® Plus Quilt with Targeted GelSense™ HD Memory Foam
    King $1,230
    Compare at $2,899
    Online availability icon In-Stock Only 4 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 18
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  • SEALY® Posturepedic Plus® 1200 Series 14" Firm Euro Top Mattress
    BEST IN CLASS TOP RATED LIMITED STOCK
    Sealy Posturepedic Plus 1200 Series 14-inch firm euro-top mattress, cream tufted top, denim-blue heathered sides Sealy Posturepedic Plus Mattress Logo
    FIRM
    • CleanProtect™ Cover
    • Sealy AirSense™ Fibres Topped with SealyIce™ Yarn
    • CertiPUR-US™ SealyComfort™ Gel HD Foam
    • Posture Grid® Coil System featuring PostureSense™ Nano Coils
    • SolidEdge™ PRO
    • PROBACK® Plus Quilt with Targeted GelSense™ HD Memory Foam
    King $1,233
    Compare at $2,899
    Online availability icon In-Stock Only 5 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 18
    Pickup available icon Only Pickup available to
    View Details
  • SEALY® Posturepedic Plus® 1200 Series 15.5" Medium Firm Europillowtop Mattress
    TOP RATED LIMITED STOCK
    Sealy Posturepedic Plus 1200 Series 15.5-inch medium-firm euro-pillow-top mattress, domed cream top, blue sides Sealy Posturepedic Plus Mattress Logo
    MEDIUM
    • CleanProtect™ Cover
    • Sealy AirSense™ Fibres Topped with SealyIce™ Yarn
    • CertiPUR-US™ SealyComfort™ Gel HD Foam
    • Posture Grid® Coil System featuring PostureSense™ Nano Coils
    • SolidEdge™ PRO
    • PROBACK® Plus Quilt with Targeted GelSense™ HD Memory Foam
    King $1,279
    Compare at $2,999
    Online availability icon In-Stock Only 3 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 18
    Pickup available icon Only Pickup available to
    View Details

12 Items

Upgrade your sleep at National Mattress

Discover a mattress that transforms your sleep into a truly rejuvenating experience. We offer a wide variety of options to suit every sleep style and preference, ensuring a better night's sleep.

Why Choose Us?

  • Variety: From plush to firm, we have options for every body type and sleep style.
  • Quality: Trusted brands and top-notch materials for long-lasting comfort.
  • Sleep Trials & Warranties: Enjoy peace of mind with flexible trials and warranties.
  • Expert Advice: Get personalized recommendations from our sleep specialists.

Mattress Selection Includes

  • Memory Foam: Contours to your body for personalized comfort and pressure relief.
  • Hybrid: Combines responsive springs with foam for balanced support and comfort.
  • Innerspring: Provides firm support, bounce, and cooling airflow.
  • Latex: Hypoallergenic, eco-friendly, and exceptionally comfortable.
  • Adjustable Beds: Customize your sleep position for optimal comfort.
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