Firm Memory Foam Back Sleeper Cooling Technology White All Mattresses

Firm mattresses give you a solid, supportive surface with minimal sink — keeping your spine aligned and making it easier to move and get in and out of bed. They're the top choice for back and stomach sleepers, heavier bodies, and anyone who finds softer beds uncomfortable. Compare every firm option below by brand, profile, and price.
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.
Back sleepers do best on a mattress that supports the lower back while gently following the spine's natural curve — typically a medium to medium-firm feel. The options below balance support and pressure relief for back sleepers. Compare them by brand, feel, and profile.
Cooling-technology mattresses use gel-infused foams, phase-change covers, or cooling fibres that actively pull heat away from your body — ideal for hot sleepers who wake up overheated. Compare every cooling option below by brand, type, and feel.

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 Memory Foam Back Sleeper Cooling Technology White All Mattresses
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  • NM 10″ Firm Memory Foam Mattress NM 10″ Firm Memory Foam Mattress brand icon
    • 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 $397
    Twin XL $548
    Double/Full $553
    Queen SOLD OUT
    Compare at $1,199
    King $887
    Online availability icon In-Stock
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    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 6
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  • CHIROFOAM™ 12" Luxury Firm Memory Foam Mattress CHIROFOAM™ 12" Luxury Firm Memory Foam Mattress brand icon
    • Cool Gel Infused Memory Foam
    • Firm Support Chirofoam
    • Pro Lumbar Support
    • Body Support Bio Foam Core
    • 15 Year Warranty
    Single/Twin $514
    Twin XL $710
    Double/Full $721
    Queen $856
    Compare at $1,599
    King $1,108
    Online availability icon In-Stock
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  • SERTA® iComfort® 11.5" Firm Memory Foam Mattress SERTA® iComfort® 11.5" Firm Memory Foam Mattress brand icon
    • CoolFeel™ Fabric
    • 5 ZoneResponse™ Design
    • Perfect Conform™ Graphite Memory Foam
    • iComfort® Gel Memory Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    Twin XL $1,299
    Double/Full SOLD OUT
    Queen SOLD OUT
    Compare at $2,599
    King SOLD OUT
    Online availability icon In-Stock Only 8 left!
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  • TEMPUR-PEDIC® Tempur-Align® 2.0 Orange 11" Firm Memory Foam Mattress TEMPUR-PEDIC® Tempur-Align® 2.0 Orange 11" Firm Memory Foam Mattress brand icon
    • Premium Fabric Cover
    • Phase Change Material
    • TEMPUR® Material
    • New generation 2.0 enhancements
    Single/Twin SOLD OUT
    Twin XL $1,600
    Double/Full $1,900
    Queen SOLD OUT
    Compare at $4,199
    King SOLD OUT
    Online availability icon In-Stock Only 8 left!
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  • SERTA® iComfort ECO™ Latex 14" Firm Memory Foam Mattress SERTA® iComfort ECO™ Latex 14" Firm Memory Foam Mattress brand icon
    • CoolTemp™ Cover powered by REPREVE®
    • Terra Fusion™ Memory Foam
    • DeepReaction® Max Gel Memory Foam
    • Latex Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    Queen $1,640
    Compare at $3,999
    Online availability icon In-Stock Only 1 left!
    In-Store availability icon On Display:
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  • SERTA® iComfort® 14" Firm Memory Foam Mattress SERTA® iComfort® 14" Firm Memory Foam Mattress brand icon
    • 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 $1,799
    Double/Full $1,899
    Queen $1,999
    Compare at $3,899
    King $2,499
    Online availability icon In-Stock
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  • SERTA® iComfort® PRO 12.5" Firm Latex Mattress SERTA® iComfort® PRO 12.5" Firm Latex Mattress brand icon
    • 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 $1,879
    Queen SOLD OUT
    Compare at $4,799
    King SOLD OUT
    Online availability icon In-Stock Only 7 left!
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  • SERTA® iComfort® PRO 14.5" Firm Euro Top Latex Mattress SERTA® iComfort® PRO 14.5" Firm Euro Top Latex Mattress brand icon
    • 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 $2,799
    Queen $3,499
    Compare at $5,299
    King SOLD OUT
    Online availability icon In-Stock Only 9 left!
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  • SERTA® iComfort® PRO 12.5" Firm Latex Mattress SERTA® iComfort® PRO 12.5" Firm Latex Mattress brand icon
    • 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 $5,399
    Queen $5,999
    Compare at $8,899
    King $6,999
    Online availability icon In-Stock
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  • OPEN BAG - NM 10″ Firm Memory Foam Mattress - Twin XL OPEN BAG - NM 10″ Firm Memory Foam Mattress - Twin XL brand icon
    • Optimal High Resilient Bio-Foam Core
    • Visco Memory Foam
    • Pressure Relieving Comfort Foam
    • Cotton Channel Quilted Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Twin XL $313
    Compare at $1,099
    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 6
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  • NM 10″ Firm Memory Foam Mattress - Single/Twin NM 10″ Firm Memory Foam Mattress - Single/Twin brand icon
    • 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 $397
    Compare at $799
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 6
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  • OPEN BAG - CHIROFOAM™ 12" Luxury Firm Memory Foam Mattress - Single/Twin OPEN BAG - CHIROFOAM™ 12" Luxury Firm Memory Foam Mattress - Single/Twin brand icon
    • Cool Gel Infused Memory Foam
    • Firm Support Chirofoam
    • Pro Lumbar Support
    • Body Support Bio Foam Core
    • 15 Year Warranty
    Single/Twin $452
    Compare at $999
    Online availability icon In-Stock Only 1 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 6
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