Firm Mattress In A Box 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.
Mattress-in-a-box options are compressed, rolled, and shipped straight to your door for quick, easy setup — just unbox and let it expand, with the same comfort and support. Compare every mattress-in-a-box 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 Mattress In A Box All Mattresses
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  • NM 6" Firm Tight Top Foam Mattress NM 6" Firm Tight Top Foam Mattress brand icon
    • High Density Foam Core
    • High Density Foam Comfort Layer
    • Cotton Channel Quilted Cover
    • 5 Year Warranty
    • Made In Toronto, Canada
    Single/Twin $177
    Twin XL $238
    Double/Full $243
    Queen $260
    Compare at $599
    Online availability icon In-Stock
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    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 5
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  • NM 10" Firm Euro Top Mattress NM 10" Firm Euro Top Mattress brand icon
    • 1000 Hi-Loft Pocket Coil with Foam Encased Perimiter
    • Cool Gel-infused memory foam
    • Bio-Foam natural foam content reduces your carbon footprint
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin $296
    Twin XL $382
    Double/Full $388
    Queen SOLD OUT
    Compare at $799
    King $581
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  • SPRINGWALL® Comfort Pockets® 10" Firm Euro-Top Mattress SPRINGWALL® Comfort Pockets® 10" Firm Euro-Top Mattress brand icon
    • 884 Full Perimeter Comfort Pockets® (Pocket Coils)
    • Bio Foam with Gel
    • Cool Touch Stretch Knit Sleep Surface
    • Bio Comfort Quilted Stretch knit surface
    • Made In Canada
    Single/Twin SOLD OUT
    Twin XL $356
    Double/Full $361
    Queen $418
    Compare at $899
    RV Short Queen SOLD OUT
    King SOLD OUT
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  • SPRINGWALL® Comfort Pockets® Elite 14" Firm Tight-Top Mattress SPRINGWALL® Comfort Pockets® Elite 14" Firm Tight-Top Mattress brand icon
    • 884 Full Perimeter Comfort Pockets® (Pocket Coils)
    • Cool Touch Stretch Knit Sleep Surface
    • Bio Comfort Quilted Stretch knit surface
    • HD Medium & Firm Layers of Bio Comfort Foam
    • Made In Canada
    Single/Twin $369
    Twin XL $494
    Double/Full $501
    Queen $565
    Compare at $1,299
    RV Short Queen $729
    King $757
    Online availability icon In-Stock
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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 $598
    Compare at $1,199
    King $887
    Online availability icon In-Stock
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  • EVERGREEN™ 10" Firm Organic Latex Foam Mattress EVERGREEN™ 10" Firm Organic Latex Foam Mattress brand icon
    • Open Cell Bio Foam Core
    • Organic Latex Comfort Layer
    • Bio-Foam natural foam content support layers
    • Organic Cotton Quilt
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin $402
    Twin XL $548
    Double/Full $556
    Queen $643
    Compare at $1,199
    King SOLD OUT
    Online availability icon In-Stock
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  • CHIROFOAM™ 12" Luxury Firm Hybrid Mattress CHIROFOAM™ 12" Luxury Firm Hybrid Mattress brand icon
    • Cool Gel Infused Memory Foam
    • Firm Support Chirofoam
    • Pro Lumbar Support
    • Canadian Made 1000 Hi-Loft Pocket Coils
    • 15 Year Warranty
    Single/Twin $442
    Twin XL $561
    Double/Full $569
    Queen SOLD OUT
    Compare at $1,299
    King SOLD OUT
    Online availability icon In-Stock
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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
    In-Store availability icon On Display:
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  • EVERGREEN™ 14" Euro-Top Firm Organic Latex Mattress EVERGREEN™ 14" Euro-Top Firm Organic Latex Mattress brand icon
    • 1000 Hi-Loft Pocket Coil with Foam Encased Perimeter
    • Organic Latex Comfort Layer
    • Bio-Foam natural foam content support layers
    • Organic Cotton Quilt with Organic Latex and Organic Wool
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin $624
    Twin XL $731
    Double/Full $743
    Queen SOLD OUT
    Compare at $1,499
    King SOLD OUT
    Online availability icon In-Stock Only 8 left!
    In-Store availability icon On Display:
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  • SEALY® Cocoon™ 10" Firm Memory Foam Mattress SEALY® Cocoon™ 10" Firm Memory Foam Mattress brand icon
    • Premium Fabric Cover
    • Perfect Fit Memory Foam
    • Personalized Comfort Layer
    • Essential Support Foam
    • 10 Year Warranty
    Twin XL SOLD OUT
    Double/Full $765
    Queen $829
    Compare at $1,799
    King $1,027
    Online availability icon In-Stock Only 7 left!
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  • EVERGREEN 100% Certified Organic 10" Firm Latex Mattress EVERGREEN 100% Certified Organic 10" Firm Latex Mattress brand icon
    • 100% Certified Natural Organic Latex
    • Global Organic Latex Standard – Certified 100% Natural
    • Eco-Institute – No Fillers or Hazardous Particles
    • Oeko-Tex Standard 100 – No Harmful Substances
    • ABC Research Laboratories – Certified Antimicrobial
    Single/Twin $1,384
    Twin XL $1,877
    Double/Full $1,906
    Queen $1,935
    Compare at $3,599
    King $2,650
    Online availability icon In-Stock
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  • NM 6" Firm Tight Top Foam Mattress - Single/Twin NM 6" Firm Tight Top Foam Mattress - Single/Twin brand icon
    • High Density Foam Core
    • High Density Foam Comfort Layer
    • Cotton Channel Quilted Cover
    • 5 Year Warranty
    • Made In Toronto, Canada
    Single/Twin $177
    Compare at $399
    Online availability icon In-Stock
    In-Store availability icon On Display:
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