🎁 Black Friday: Save the Tax on every mattress 🎁

Firm Latex Copper, Charcoal or Graphite Infusion Foam Core Temperature-Regulating Mattresses Adjustable Bed Base Friendly All

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
These mattresses include latex, usually in the comfort layers. Latex responds quickly and pushes back gently, so it relieves pressure without the slow sinking feel of memory foam, and it sleeps cooler than most foams. Latex layers appear in hybrids and foam beds alike. To find beds with a latex support core, use Mattress Core.
These mattresses blend copper, charcoal, graphite or similar minerals into their foam layers or cover fabric. These materials conduct heat well, helping move warmth away from your body, and are also used to help keep the mattress fresh by resisting odour. A good place to start if you sleep warm and want cooling built into the materials themselves.
Foam core mattresses have no springs. The support comes from a core of high-density foam, with comfort layers of memory foam, gel foam or responsive foam on top. Foam absorbs movement, so a partner turning over is hard to feel, and with no coils the bed stays quiet. Use Mattress Type to choose between Memory Foam and Foam for the feel of the layers.
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 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.
Firm Latex Copper, Charcoal or Graphite Infusion Foam Core Temperature-Regulating Mattresses Adjustable Bed Base Friendly All
Loading recommendations...
  • Evergreen 10-inch firm organic latex foam mattress, white channel-quilted tight-top, ribbed sides, sage trim Evergreen Sleep Organic Latex Mattress Collection Logo
    • 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 In stock for fast delivery $548
    Double/Full In stock for fast delivery $439
    Queen In stock for fast delivery $643
    Compare at $1,199
    King In stock for fast delivery $842
    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, Nov 8on select sizesfast delivery truck icon
    Pickup available icon Only Pickup available to
    M5H 2N1
  • EVERGREEN ecoRest 10" Firm Certified Organic Latex Mattress, cream quilted cotton cover on dark boxspring Evergreen Sleep Organic Latex Mattress Collection Logo
    • Organic Latex
    • Cool Gel Foam
    • Organic Cotton Fabric
    • Open Cell Foam Core
    Single/Twin SOLD OUT
    Twin XL In stock for fast delivery $319
    Double/Full SOLD OUT
    Queen SOLD OUT
    Compare at $1,199
    King SOLD OUT
    Online availability icon In-Stock Only 3 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Nov 8on select sizesfast delivery truck icon
    Pickup available icon Only Pickup available to
    M5H 2N1
  • Sealy Natural Origins 13.5-inch firm tight-top latex mattress, flat tufted white top, grey-black diamond sides Sealy Natural Origins Mattress Logo
    • OEKO-TEX Certified BioGel Latex
    • SealyCool Fibres with Silk & Wool
    • Organic Cotton Infused with Bamboo
    • Targeted ComfortSense Memory Foam
    • SealySupport HD Core
    • CertiPUR-US® Approved Foam
    Single/Twin In stock for fast delivery $709
    Twin XL In stock for fast delivery $829
    Double/Full $940
    Queen $998
    Compare at $2,399
    King $1,322
    Online availability icon In-Stock Only 2 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Nov 8on select sizesfast delivery truck icon
    Pickup available icon Only Pickup available to
    M5H 2N1
  • 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 $1,339
    Double/Full $1,499
    Queen $1,599
    Compare at $2,599
    King $1,999
    Online availability icon In-Stock Only 1 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Nov 8on select sizesfast delivery truck icon
    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 In stock for fast delivery $816
    Compare at $3,999
    Online availability icon In-Stock Only 1 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Nov 8
    Pickup available icon Only Pickup available to
    M5H 2N1
  • Evergreen 10-inch firm organic latex foam mattress, white channel-quilted tight-top, ribbed sides, sage trim Evergreen Sleep Organic Latex Mattress Collection Logo
    • 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
    Queen In stock for fast delivery $547
    Compare at $1,199
    Online availability icon In-Stock Only 1 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Nov 8
    Pickup available icon Only Pickup available to
    M5H 2N1
  • 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 $2,149
    Double/Full In stock for fast delivery $1,989
    Queen In stock for fast delivery $2,069
    Compare at $3,899
    King In stock for fast delivery $2,689
    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, Nov 8
    Pickup available icon Only Pickup available to
    M5H 2N1
  • SERTA® iComfort® Zip 13" Firm Mattress
    EXCLUSIVE OFFER LIMITED STOCK
    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 $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
    In-Store availability icon On Display:
    Estimated delivery icon Order today to receive by Tue, Nov 24
  • Evergreen 10-inch firm organic latex foam mattress, white channel-quilted tight-top, ribbed sides, sage trim Evergreen Sleep Organic Latex Mattress Collection Logo
    • 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
    King In stock for fast delivery $488
    Compare at $1,499
    Online availability icon In-Stock Only 3 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Nov 8
    Pickup available icon Only Pickup available to
    M5H 2N1

9 Items

Loading recommendations...