Firm Mattresses Compatible with Adjustable Bed Base | Flex‑Friendly Foam, Latex & Hybrid Mattresses with Edge Support | Stable, Full‑Edge Comfort Temperature‑Regulating Mattresses | Year‑Round Comfort & Balance Serta Mattresses

Firm mattresses give you the most support of our everyday comfort levels — a solid, stable surface that keeps your spine aligned instead of sinking in. Firm is the go-to for back and stomach sleepers, heavier-weight sleepers who need extra support, and anyone looking for orthopedic, back-friendly comfort; side sleepers or those who like a softer feel may prefer our medium or plush options. Choose from tight-top, foam, euro-top and hybrid builds across Sealy, Serta, Beautyrest, Stearns & Foster, iComfort, Tempur-Pedic, Chirofoam and our own NM line — from budget-friendly models at $59 to premium, with free delivery across Canada. • Feel: firm gives a solid, supportive surface with minimal sink-in • Best for: back and stomach sleepers, heavier-weight sleepers, and orthopedic / back-pain support • Consider softer if you sleep on your side or want more cushioning — see our medium or plush options • Constructions: tight-top (most firm beds), foam, euro-top and hybrid • Brands: Sealy, Serta, Beautyrest, Stearns & Foster, iComfort, Tempur-Pedic, Chirofoam, Springwall & NM • Prices: from $59 (budget) to premium — our widest price range • Want the firmest feel? See our extra-firm mattresses
These mattresses are built to flex with adjustable bed bases — bending smoothly at the head and foot without damage — so you can raise, recline, and find your ideal position. Compare every adjustable-base-compatible option below by brand, type, and feel.
Edge-support mattresses use reinforced perimeters so you can sleep right to the edge without roll-off and get firm support when sitting on the side — ideal for couples maximizing space. Compare every edge-support option below by brand, type, and feel.
Temperature-regulating mattresses balance heat and airflow to hold a neutral, consistent sleep temperature through the night — not too hot, not too cold. They suit sleepers whose temperature swings. Compare every option below by brand, type, and feel.

Serta is a globally recognized mattress brand celebrated for its comfort-first designs and sleep innovations. With over 90 years of experience, Serta continues to deliver quality mattresses that Canadians can trust.

Shop 200+ mattresses from Serta, Beautyrest, Sealy, Tempur-Pedic, Springwall, and Stearns & Foster at National Mattress — available in Single/Twin through King sizes from $99 to $6,640. Choose from innerspring, euro-top, memory foam, hybrid, and latex constructions in four firmness levels from extra firm to plush. Every mattress is manufactured in Canadian factories using CertiPUR-US® certified foams and ships free across Canada with a 365-night sleep trial, price match guarantee, and manufacturer warranty coverage up to 25 years.

Firm Mattresses Compatible with Adjustable Bed Base | Flex‑Friendly Foam, Latex & Hybrid Mattresses with Edge Support | Stable, Full‑Edge Comfort Temperature‑Regulating Mattresses | Year‑Round Comfort & Balance Serta
Loading recommendations...

Items

Express delivery icon

Items

  • SERTA® Classic® 10" Firm Tight Top Mattress SERTA® Classic® 10" Firm Tight Top Mattress brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support
    • Serta® Support Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    Single/Twin $449
    Twin XL In stock for fast delivery $469
    Double/Full $479
    Queen $499
    Compare at $1,499
    King $699
    Online availability icon In-Stock Only 4 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 13
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Sleeper® 10.5" Firm Tight Top Mattress SERTA® Perfect Sleeper® 10.5" Firm Tight Top Mattress brand icon
    • 825 Edition Custom Support Coil System
    • CoolFeel Fabric™
    • Gel Band Support
    • Serta® Support Foam
    • PillowSoft® Foam
    • Designed and Made in Canada
    Single/Twin $565
    Twin XL In stock for fast delivery $610
    Double/Full $619
    Queen $665
    Compare at $1,399
    King $825
    Online availability icon In-Stock Only 2 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 13
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Sleeper® 12" Luxury Firm Tight Top Mattress SERTA® Perfect Sleeper® 12" Luxury Firm Tight Top Mattress brand icon
    • 850 Edition Custom Support Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
    Single/Twin $776
    Twin XL In stock for fast delivery $824
    Double/Full $837
    Queen $886
    Compare at $1,799
    King $1,042
    Online availability icon In-Stock Only 5 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 13
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Sleeper® 13.5" Firm Pillow Top Mattress SERTA® Perfect Sleeper® 13.5" Firm Pillow Top Mattress brand icon
    • 850 Edition Custom Support Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
    Single/Twin In stock for fast delivery $847
    Twin XL In stock for fast delivery $889
    Double/Full $902
    Queen $953
    Compare at $1,999
    King $1,117
    Online availability icon In-Stock Only 4 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 13
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Sleeper® 12" Firm Hybrid Mattress SERTA® Perfect Sleeper® 12" Firm Hybrid Mattress brand icon
    • 1000 Series 3-Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Support Foam
    • Cool Twist® Gel Memory Foam
    • Hybrid Design
    • Designed and Made in Canada
    Single/Twin $840
    Twin XL In stock for fast delivery $896
    Double/Full $909
    Queen $953
    Compare at $1,999
    King $1,117
    Online availability icon In-Stock Only 4 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 13
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Sleeper® Premium 15" Firm Pillow Top Mattress SERTA® Perfect Sleeper® Premium 15" Firm Pillow Top Mattress brand icon
    • 1000 Series 3-Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
    Single/Twin In stock for fast delivery $980
    Twin XL In stock for fast delivery $1,032
    Double/Full $1,047
    Queen $1,100
    Compare at $2,299
    King $1,266
    Online availability icon In-Stock Only 7 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 13
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Comfort X™ 13" Firm Tight Top Mattress SERTA® Perfect Comfort X™ 13" Firm Tight Top Mattress brand icon
    • 1250 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • CoolFeel Fabric™
    • QuiltLoft™ Memory Foam
    • PerfectPure™ Fibre
    • Designed and Made in Canada
    Twin XL In stock for fast delivery $1,002
    Double/Full $1,089
    Queen $1,178
    Compare at $2,899
    King $1,461
    Online availability icon In-Stock Only 6 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 13
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Comfort X™ 14.5" Luxury Firm Tight Top Mattress SERTA® Perfect Comfort X™ 14.5" Luxury Firm Tight Top Mattress brand icon
    • 2550 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • Cool Twist® Gel Memory Foam
    • Perfect Conform™ Micro Coils
    • CoolFeel Fabric™ w/ QuiltLoft™ Memory Foam
    • Designed and Made in Canada
    Twin XL In stock for fast delivery $1,304
    Double/Full In stock for fast delivery $1,389
    Queen $1,483
    Compare at $3,599
    King $1,766
    Online availability icon In-Stock Only 7 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 13
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Comfort X™ 14" Luxury Firm Hybrid Mattress SERTA® Perfect Comfort X™ 14" Luxury Firm Hybrid Mattress brand icon
    • 2550 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • Deep Reaction® Max Gel Memory Foam + Cool Twist® Gel Memory Foam
    • Perfect Conform™ Micro Coils
    • CoolFeel Fabric™ w/ QuiltLoft™ Memory Foam
    • Designed and Made in Canada
    Twin XL In stock for fast delivery $1,523
    Double/Full $1,618
    Queen $1,715
    Compare at $4,099
    King $1,998
    Online availability icon In-Stock Only 7 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 13
    Pickup available icon Only Pickup available to
  • SERTA® Perfect Comfort X™ 15" Luxury Firm Super Pillow Top Mattress SERTA® Perfect Comfort X™ 15" Luxury Firm Super Pillow Top Mattress brand icon
    • 2550 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • Cool Twist® Gel Memory Foam
    • Perfect Conform™ Micro Coils
    • CoolFeel Fabric™ w/ QuiltLoft™ Memory Foam
    • Designed and Made in Canada
    Twin XL In stock for fast delivery $1,523
    Double/Full In stock for fast delivery $1,618
    Queen $1,715
    Compare at $4,099
    King $1,998
    Online availability icon In-Stock Only 5 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 13
    Pickup available icon Only Pickup available to
  • OPEN BAG - SERTA® Perfect Sleeper® 13.5" Firm Pillow Top Mattress - Twin XL OPEN BAG - SERTA® Perfect Sleeper® 13.5" Firm Pillow Top Mattress - Twin XL brand icon
    • 850 Edition Custom Support Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
    Twin XL In stock for fast delivery $436
    Compare at $1,899
    Online availability icon In-Stock Only 2 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 13
    Pickup available icon Only Pickup available to
  • SERTA® Classic® 10" Firm Tight Top Mattress - Single/Twin SERTA® Classic® 10" Firm Tight Top Mattress - Single/Twin brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support
    • Serta® Support Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    Single/Twin $449
    Compare at $1,299
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tuesday, Jun 30

Items 1-12 of 64

Showing of products

Loading recommendations...