Firm Medium Mattresses Temperature-Regulating Mattresses All 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
Medium-firmness mattresses — often called medium-firm — sit right between plush and firm, which is why they're the most popular and versatile feel we carry. You get enough cushioning to relieve pressure with enough support to keep your spine aligned, making medium a safe choice for back sleepers, combination sleepers who change positions through the night, and couples who need a compromise between two preferences. Shop medium models from Sealy, Serta, Beautyrest, Stearns & Foster, iComfort and Tempur-Pedic across memory foam, hybrid, euro-top, pillow-top and tight-top builds — with free delivery across Canada. • Feel: medium sits between plush and firm — balanced and the most versatile of our four comfort levels • Also called "medium-firm" — the middle of the firmness scale • Best for: back sleepers, combination sleepers, couples, and most body types • Consider plush if you sleep on your side; firm if you sleep on your stomach or want more support • Constructions: euro-top, tight-top, pillow-top, memory foam and hybrid • Brands: Sealy, Serta, Beautyrest, Stearns & Foster, iComfort, Tempur-Pedic, Springwall & NM • Prices: from $171 to premium
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

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 Medium Mattresses Temperature-Regulating Mattresses All Mattresses
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  • Springwall 6-inch medium-firm tight-top foam mattress with patterned white quilted cover and charcoal sides SPRINGWALL® 6" Medium Firm Tight Top Foam Mattress brand icon
    • Bio Comfort Foam Core
    • Gel Quilt Foam
    • Stretch Knit
    • Reduced Motion Transfer
    • Made In Canada
    Single/Twin $171
    Twin XL In stock for fast delivery $228
    Double/Full In stock for fast delivery $231
    Queen In stock for fast delivery $271
    Compare at $599
    RV Short Queen $290
    King In stock for fast delivery $381
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  • Springwall 7-inch medium-firm tight-top foam mattress, white cover with grey cloud motifs and charcoal quilted sides SPRINGWALL® 7" Medium Firm Tight Top Foam Mattress brand icon
    • Bio Comfort Foam Core
    • Gel Quilt Foam
    • Convoluted Bio Comfort Foam
    • Reduced Motion Transfer
    • Made In Canada
    Single/Twin In stock for fast delivery $206
    Twin XL In stock for fast delivery $283
    Double/Full In stock for fast delivery $287
    Queen In stock for fast delivery $335
    Compare at $799
    RV Short Queen $360
    King In stock for fast delivery $476
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  • Springwall Comfort Pockets 10-inch firm euro-top mattress, plain white quilted top with charcoal diamond-quilted sides 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 $278
    Twin XL In stock for fast delivery $356
    Double/Full In stock for fast delivery $361
    Queen In stock for fast delivery $418
    Compare at $899
    RV Short Queen $450
    King $544
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  • NM 8" Medium Firm Memory Foam Mattress
    BEST IN CLASS TOP RATED TRENDING
    National Mattress 8-inch medium-firm memory-foam mattress, smooth white tight-top, charcoal sides, NM badge NM 8" Medium Firm Memory Foam Mattress brand icon
    • High Density Foam Core
    • Cool Gel Memory Foam
    • Hypoallergenic Bamboo Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin In stock for fast delivery $289
    Double/Full In stock for fast delivery $399
    Twin XL In stock for fast delivery $399
    Queen In stock for fast delivery $428
    Compare at $899
    King In stock for fast delivery $640
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  • NM 10" Firm Euro Top Mattress
    BEST IN CLASS BEST SELLING TOP RATED
    National Mattress 10-inch firm euro-top mattress, white wave-quilted top with black diamond-patterned sides 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 In stock for fast delivery $296
    Twin XL In stock for fast delivery $382
    Double/Full In stock for fast delivery $388
    Queen In stock for fast delivery $436
    Compare at $799
    King In stock for fast delivery $581
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  • NM 10" Medium Firm Euro Top Mattress
    BEST IN CLASS BEST SELLING TOP RATED
    National Mattress 10-inch medium-firm euro-top mattress, white quilted top, tall black patterned sides NM 10" Medium Firm Euro Top Mattress brand icon
    • 800 Hi-Loft Pocket Coil
    • Cool Gel infused memory foam
    • Luxurious Knit Fabric
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin In stock for fast delivery $318
    Double/Full In stock for fast delivery $325
    Queen In stock for fast delivery $347
    Compare at $699
    King In stock for fast delivery $535
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  • Springwall Comfort Pockets 12-inch medium-firm euro-top mattress, white pebble-motif cover with grey woven sides SPRINGWALL® Comfort Pockets® 12" Medium Firm Euro-Top Mattress brand icon
    • 884 Full Perimeter Comfort Pockets® (Pocket Coils)
    • Bio Foam with Gel
    • HD Medium Bio Comfort Foam
    • Bio Comfort Quilted Stretch knit surface
    • Made In Canada
    Single/Twin In stock for fast delivery $323
    Twin XL In stock for fast delivery $419
    Double/Full $426
    Queen In stock for fast delivery $511
    Compare at $1,099
    RV Short Queen $550
    King $648
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  • Springwall Comfort Pockets Elite 14-inch firm tight-top mattress, navy quilted cover with coral accent stitching 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 In stock for fast delivery $369
    Twin XL In stock for fast delivery $494
    Double/Full In stock for fast delivery $501
    Queen In stock for fast delivery $565
    Compare at $1,299
    RV Short Queen In stock for fast delivery $729
    King In stock for fast delivery $757
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  • Springwall HC flippable 11-inch firm tight-top mattress, flat white aloe vera top with grey damask quilted sides SPRINGWALL® HC Flippable 11" Firm Tight-Top Mattress brand icon
    • 884 Full Perimeter Comfort Pockets® (Pocket Coils)
    • Bio Foam with Gel
    • Cool Touch Stretch Knit Sleep Surface
    • Flippable Bio Comfort Quilted Stretch knit surface
    • Made In Canada
    Single/Twin In stock for fast delivery $386
    Twin XL In stock for fast delivery $520
    Double/Full In stock for fast delivery $528
    RV Short Queen In stock for fast delivery $564
    Queen In stock for fast delivery $610
    Compare at $1,299
    King $809
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  • NM 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 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 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
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  • Evergreen 12-inch tight-top medium-firm organic latex mattress, white button-tufted top, sage piped border EVERGREEN™ 12" Tight-Top Medium-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 In stock for fast delivery $402
    Twin XL In stock for fast delivery $548
    Double/Full In stock for fast delivery $556
    Queen In stock for fast delivery $645
    Compare at $1,199
    King In stock for fast delivery $840
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  • Evergreen 10-inch firm organic latex foam mattress, white channel-quilted tight-top, ribbed sides, sage trim 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 In stock for fast delivery $402
    Twin XL In stock for fast delivery $548
    Double/Full In stock for fast delivery $556
    Queen In stock for fast delivery $643
    Compare at $1,199
    King In stock for fast delivery $842
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