Our Factory Clearance Sale is on now!

Firm Memory Foam Natural & Organic Mattresses Adjustable Bed Base Friendly Compatible with Adjustable Bed Edge Support Mattresses Default Category

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.
For a cleaner, more eco-conscious sleep, our natural and organic mattresses are built with materials you can feel good about — natural Talalay latex, organic cotton and wool covers, plant-based and soy-derived foams, and recycled fibres, with low-VOC, CertiPUR-US® certified components. They're a great fit if you want fewer synthetic chemicals, more sustainable materials, or a naturally breathable, hypoallergenic feel. You'll find genuinely certified-organic options — like GOTS organic cotton and organic latex from Natura and Evergreen — alongside natural-material and eco-friendly builds from Serta iComfort ECO, Sealy, Beautyrest and our own NM line. Every mattress includes a 365-night sleep trial and free delivery across Canada. • What "natural materials" means: Talalay latex, organic cotton & wool, plant-based/soy foams and recycled fibres • Certified-organic options: GOTS organic cotton and organic latex (Natura, Evergreen) • Eco-friendly builds: Serta iComfort ECO (REPREVE recycled) plus low-VOC, CertiPUR-US® foams • Best for: shoppers who want fewer synthetic chemicals, sustainable materials, or a naturally breathable feel • Looking specifically for latex? See our latex mattresses • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery
Shop adjustable base friendly mattresses from Beautyrest, Serta, Sealy, Tempur-Pedic, Springwall, iComfort, and Stearns & Foster at National Mattress — 169+ models in memory foam, hybrid, latex, eurotop, and tight-top constructions from $59 to $6,640. Every mattress in this collection is manufacturer-verified to flex and articulate with an adjustable base without voiding the warranty. Available in Twin through King sizes with firmness levels from extra firm to plush, all built with CertiPUR-US® certified foams, including Canadian-made options. Free delivery is available, along with a 365-night sleep trial and 5–15 year warranty coverage.
Edge support mattresses are reinforced around the perimeter so the edge feels as solid as the middle — you can sleep right up to the side without that sinking, roll-off feeling, sit on the edge to get dressed without it caving, and use the full surface of the bed. It's a feature that matters most for couples sharing the space, anyone who sits on the edge to get in and out of bed, and heavier-weight sleepers. These are mostly our pocket-coil and hybrid mattresses with full-perimeter coils or foam-encased edges — from Springwall (Full Perimeter Comfort Pockets), Sealy, Serta, Beautyrest, iComfort, Stearns & Foster and our own NM line. Every mattress includes a 365-night sleep trial and free delivery across Canada. • What it does: a reinforced perimeter so the edge stays firm — no sinking or rolling off • Why it matters: more usable sleep surface, easier to sit on the edge and get in and out of bed • Best for: couples sharing space, anyone who sits on the edge, and heavier-weight sleepers • How it works: full-perimeter pocket coils or foam-encased edges (mostly coil & hybrid; all-foam edges are softer) • Brands: Springwall (Full Perimeter Comfort Pockets), Sealy, Serta, Beautyrest, iComfort, Stearns & Foster & NM • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery
Firm Memory Foam Natural & Organic Mattresses Adjustable Bed Base Friendly Compatible with Adjustable Bed Edge Support Mattresses Default Category
Loading recommendations...
  • NM® Cozy Air™ 10" Firm Memory Foam Mattress - 1 NM Cozy Collection Logo
    • 7.5″ High Density Foam Core
    • 2″ Cool Gel Memory Foam
    • 3D Air-Knit Performance Fabric
    • Firm 8/10 Feel
    • Foam Core, No Coils
    • CertiPUR-US® Certified, Fiberglass Free
    • Mattress In A Box
    • 10 Year Warranty
    • Made In Canada
    Single/Twin In stock for fast delivery $400
    Twin XL In stock for fast delivery $455
    Double/Full $462
    Queen In stock for fast delivery $503
    Compare at $1,199
    King $688
    Online availability icon In-Stock Only 8 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Sep 15
    Pickup available icon Only Pickup available to
    M5H 2N1
  • NM Cozy 10" Firm Memory Foam Mattress
    BEST IN CLASS TOP RATED LIMITED STOCK
    National Mattress 10-inch firm memory-foam mattress, white channel-quilted tight-top, grey woven sides NM Cozy Collection Logo
    • 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 $329
    Twin XL In stock for fast delivery $548
    Double/Full $553
    Queen In stock for fast delivery $598
    Compare at $1,199
    King In stock for fast delivery $749
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Sep 15
    Pickup available icon Only Pickup available to
    M5H 2N1
  • Sealy Cocoon 10-inch firm memory foam mattress, white pebbled knit top, black Cocoon side band Sealy Cocoon Memory Foam Mattress Logo
    • 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 $689
    Queen In stock for fast delivery $779
    Compare at $2,199
    King $1,273
    Online availability icon In-Stock Only 4 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Sep 15
    Pickup available icon Only Pickup available to
    M5H 2N1
  • CHIROFOAM™ 2.0 - 12" Luxury Firm Memory Foam Mattress - 1 Chirofoam Logo
    • 8″ Optimal High Density Bio-Foam Core
    • 2″ Firm Support Chirofoam
    • Pro Lumbar Support
    • 2″ Cool Gel Memory Foam
    • Cool Touch Performance Cover
    • 15 Year Warranty
    • Made In Canada
    Single/Twin In stock for fast delivery $488
    Twin XL In stock for fast delivery $675
    Double/Full In stock for fast delivery $685
    Queen In stock for fast delivery $813
    Compare at $1,599
    King $1,053
    Online availability icon In-Stock Only 5 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Sep 15
    Pickup available icon Only Pickup available to
    M5H 2N1
  • Chirofoam 12-inch luxury-firm memory foam mattress, smooth white knit top, pale blue edge, navy sides Chirofoam Logo
    • 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 to M5H 2N1 as soon as Tomorrow, Sep 15
    Pickup available icon Only Pickup available to
    M5H 2N1
  • SERTA® iComfort® Zip 13" Firm Mattress - 1 Serta iComfort Logo
    • 6″ Serta® StablCore™ High-Density Foam Core
    • CoolTemp™ Zippered Cover
    • Perfect Conform™ Graphite Memory Foam
    • iComfort® Gel Memory Foam
    • Serta® Support Foam
    • 10 Year Warranty
    • Made In Canada
    Twin XL In stock for fast delivery $1,459
    Double/Full $1,554
    Queen $1,650
    Compare at $3,999
    Queen Split Head $1,788
    King $1,933
    King Split Head $2,216
    Online availability icon In-Stock Only 7 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Sep 15
    Pickup available icon Only Pickup available to
    M5H 2N1
  • Sealy Posturepedic Luxury 14.5-inch firm hybrid mattress, tall grey wavy tight-top, black sides, blue badge Sealy Posturepedic Luxury Mattress Logo
    • SealyCool™ Fabric Premium Ultra-Stretch Cover
    • Silhouette™ Memory Foam
    • SealyMAX™ Core System featuring SealyResponse™ PRO & SolidSupport™ Pocket Coils
    • SolidEdge™ PRO Coil Edge
    • Sealy ComfortSense™ Memory Foam with SealyCool™
    • Zoned Pocket Coil Support
    Twin XL In stock for fast delivery $1,577
    Double/Full In stock for fast delivery $1,609
    Queen $1,694
    Compare at $3,999
    King $1,990
    Online availability icon In-Stock Only 6 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Sep 15
    Pickup available icon Only Pickup available to
    M5H 2N1
  • 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
    • 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 to M5H 2N1 as soon as Tomorrow, Sep 15
    Pickup available icon Only Pickup available to
    M5H 2N1
  • 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
    • 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 to M5H 2N1 as soon as Tomorrow, Sep 15
    Pickup available icon Only Pickup available to
    M5H 2N1
  • 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
    • 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 to M5H 2N1 as soon as Tomorrow, Sep 15
    Pickup available icon Only Pickup available to
    M5H 2N1
  • Serta iComfort ECO 14-inch firm latex memory foam mattress, wavy top, navy side, three cooling snowflakes Serta iComfort Logo
    • CoolTemp™ Cover powered by REPREVE®
    • Terra Fusion™ Memory Foam
    • DeepReaction® Max Gel Memory Foam
    • Latex Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    Queen SOLD OUT
    Compare at $3,999
    Online availability icon Out Of Stock
    In-Store availability icon On Display:
  • 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
    • 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 In stock for fast delivery $2,799
    Compare at $4,199
    King $3,499
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Sep 15
    Pickup available icon Only Pickup available to
    M5H 2N1

Items 1-12 of 16

Showing of products

Loading recommendations...