Firm Memory Foam Compatible with Adjustable Bed White Mattresses Mattress Selector

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
Memory foam mattresses contour to your body, relieving pressure at the hips and shoulders while absorbing motion so you won't feel your partner move. They give a cradling, "hug" feel that suits side sleepers and couples. Browse every memory foam option below by brand, feel, and profile.

Most of our mattresses come in a clean, neutral white or off-white cover — and since that cover sits under your sheets, colour won't change how you sleep. To find the right bed, shop by what actually matters: your size (twin to king), your comfort level (plush, medium, firm), or your preferred type (memory foam, hybrid, pocket coil). Every mattress includes a 365-night sleep trial and free delivery across Canada.
Firm Memory Foam Compatible with Adjustable Bed White Mattresses Mattress Selector

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Firm Memory Foam Compatible with Adjustable Bed White Clear all
  • NM Cozy 10" Firm Memory Foam Mattress
    BEST IN CLASS TOP RATED TRENDING
    National Mattress 10-inch firm memory-foam mattress, white channel-quilted tight-top, grey woven sides NM Cozy Collection Logo
    FIRM
    • Optimal High Resilient Bio-Foam Core
    • Visco Memory Foam
    • Pressure Relieving Comfort Foam
    • Cotton Channel Quilted Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin In stock for fast delivery $397
    Twin XL In stock for fast delivery $548
    Double/Full In stock for fast delivery $553
    Queen In stock for fast delivery $598
    Compare at $1,199
    King In stock for fast delivery $887
    Online availability icon In-Stock
    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
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  • CHIROFOAM™ 12" Luxury Firm Memory Foam Mattress
    BEST IN CLASS BEST SELLING TOP RATED
    Chirofoam 12-inch luxury-firm memory foam mattress, smooth white knit top, pale blue edge, navy sides Chirofoam Logo
    FIRM
    • Cool Gel Infused Memory Foam
    • Firm Support Chirofoam
    • Pro Lumbar Support
    • Body Support Bio Foam Core
    • 15 Year Warranty
    Single/Twin In stock for fast delivery $514
    Twin XL In stock for fast delivery $710
    Double/Full In stock for fast delivery $721
    Queen In stock for fast delivery $856
    Compare at $1,599
    King In stock for fast delivery $1,108
    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® Cocoon™ 10" Firm Memory Foam Mattress
    LIMITED STOCK
    Sealy Cocoon 10-inch firm memory foam mattress, white pebbled knit top, black Cocoon side band Sealy Cocoon Memory Foam Mattress Logo
    FIRM
    • Premium Fabric Cover
    • Perfect Fit Memory Foam
    • Personalized Comfort Layer
    • Essential Support Foam
    • 10 Year Warranty
    Twin XL $759
    Double/Full In stock for fast delivery $820
    Queen In stock for fast delivery $926
    Compare at $2,199
    King In stock for fast delivery $1,273
    Online availability icon In-Stock Only 6 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
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  • SERTA® iComfort® 11.5" Firm Memory Foam Mattress
    FLASH SALE BEST IN CLASS EXCLUSIVE OFFER
    Serta iComfort 11.5-inch firm memory foam mattress, blue-white quilted swirl top, charcoal sides Serta iComfort Logo
    FIRM
    • CoolFeel™ Fabric
    • 5 ZoneResponse™ Design
    • Perfect Conform™ Graphite Memory Foam
    • iComfort® Gel Memory Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    Twin XL In stock for fast delivery $1,299
    Double/Full $1,599
    Queen $1,699
    Compare at $2,599
    King $2,099
    Online availability icon In-Stock Only 8 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
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  • SERTA® iComfort® 14" Firm Memory Foam Mattress
    FLASH SALE EXCLUSIVE OFFER LIMITED STOCK
    Serta iComfort 14-inch firm memory foam mattress, bold blue radial-quilt top, charcoal sides Serta iComfort Logo
    FIRM
    • CoolFeel™ Fabric
    • 5 ZoneResponse™ Design
    • Perfect Conform™ Graphite Memory Foam
    • Deep Reaction® Max Gel Memory Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    Twin XL In stock for fast delivery $1,799
    Double/Full In stock for fast delivery $1,899
    Queen In stock for fast delivery $1,999
    Compare at $3,899
    King In stock for fast delivery $2,499
    Online availability icon In-Stock
    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
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  • SERTA® iComfort® PRO 12.5" Firm Latex Mattress
    FLASH SALE EXCLUSIVE OFFER LIMITED STOCK
    Serta iComfort PRO 12.5-inch firm latex mattress, cream quilted top, denim-blue sides Serta iComfort Pro Memory Foam Mattress Logo
    FIRM
    • CoolFeel™ Pro System
    • 5 ZoneResponse™ Design
    • Graphite-Infused True Response™ Latex Foam
    • True Response™ Latex Foam
    • Derived from 100% Natural Latex
    • 100% Canada Assembled
    Twin XL In stock for fast delivery $1,879
    Queen SOLD OUT
    Compare at $4,799
    King SOLD OUT
    Online availability icon In-Stock Only 7 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 18
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  • TEMPUR-PEDIC® Tempur-Align® 2.0 Orange 11" Firm Memory Foam Mattress
    EXCLUSIVE OFFER LIMITED STOCK
    Tempur-Pedic Tempur-Align 2.0 11-inch firm memory foam mattress, smooth white foam top on charcoal foundation Tempurpedic Luxury Memory Foam Mattress Logo
    FIRM
    • Premium Fabric Cover
    • Phase Change Material
    • TEMPUR® Material
    • New generation 2.0 enhancements
    Single/Twin $2,199
    Twin XL In stock for fast delivery $2,299
    Double/Full In stock for fast delivery $2,649
    Queen $2,799
    Compare at $4,199
    King $3,499
    Online availability icon In-Stock Only 8 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
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  • SERTA® iComfort® PRO 14.5" Firm Euro Top Latex Mattress
    EXCLUSIVE OFFER LIMITED STOCK
    Serta iComfort PRO 14.5-inch firm euro-top latex mattress, cream top, grey chevron gusset, blue sides Serta iComfort Pro Memory Foam Mattress Logo
    FIRM
    • CoolFeel™ Pro System
    • 5 ZoneResponse™ Design
    • 2X Graphite-Infused True Response™ Latex Foam
    • 2X True Response™ Latex Foam
    • Derived from 100% Natural Latex
    • 100% Canada Assembled
    Twin XL In stock for fast delivery $2,799
    Queen In stock for fast delivery $3,499
    Compare at $5,299
    King $3,899
    Online availability icon In-Stock Only 9 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
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  • SERTA® iComfort® PRO 12.5" Firm All-Latex Mattress
    EXCLUSIVE OFFER LIMITED STOCK NEW ARRIVAL
    Serta iComfort PRO 12.5-inch firm latex mattress, cream top, grey chevron print, denim-blue sides Serta iComfort Pro Memory Foam Mattress Logo
    FIRM
    • CoolFeel™ Pro System
    • 5 ZoneResponse™ Design
    • Graphite-Infused True Response™ Latex Foam
    • True Response™ Latex Foam Core
    • Derived from 100% Natural Latex
    • 100% Canada Assembled
    Twin XL In stock for fast delivery $5,399
    Queen In stock for fast delivery $5,999
    Compare at $8,899
    King In stock for fast delivery $6,999
    Online availability icon In-Stock
    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
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9 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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