Extra Firm Cooling Mattresses Adjustable Bed Compatible Mattresses Temperature-Regulating Mattresses Serta Mattresses

Extra firm mattresses are the firmest, most supportive feel we carry — a hard, no-sink surface that holds your body on top of the mattress rather than letting it settle in. They're built for stomach sleepers, heavier-weight sleepers and anyone who finds a standard firm mattress still too soft, delivering maximum support and spinal alignment. Most use a tight-top or high-density foam construction (including orthopedic Chirofoam), with budget-friendly options that keep extra-firm support affordable. Shop Beautyrest, Serta, Chirofoam, Springwall and our own NM line — from $152, with free delivery across Canada. • Feel: extra firm is the firmest of our four comfort levels — a hard, no-sink surface • Best for: stomach sleepers, heavier-weight sleepers, and anyone who wants maximum support • Choose this over firm if a standard firm mattress still feels too soft • Consider firm or medium if you sleep on your side or want any cushioning • Constructions: tight-top and high-density foam (including orthopedic Chirofoam) • Brands: Beautyrest, Serta, Chirofoam, Springwall & NM • Prices: from $152 — an affordable, value-focused selection
If you sleep hot, the right mattress can make all the difference. Our cooling mattresses are built to draw heat away from your body and keep you comfortable all night — using cooling technologies like gel-infused memory foam, cool-to-the-touch and phase-change covers, graphite and copper infusions, and breathable pocket-coil airflow. You'll find cooling builds across every brand — Sealy, Serta, Beautyrest, iComfort, Tempur-Pedic, Chirofoam and our own NM line — in foam, hybrid and pocket-coil, from plush to firm. If you wake up sweaty or run warm at night, start here. Every mattress includes a 365-night sleep trial, price-match guarantee and free delivery across Canada. • Best for: hot sleepers, night sweats, or anyone who runs warm • Cooling technologies: gel-infused memory foam, cool-to-the-touch & phase-change covers, graphite/copper infusions, breathable coil airflow • Builds: gel memory foam, hybrid and pocket-coil • Across every brand and firmness, plush to firm • Why it helps: draws heat away and improves airflow so you sleep cooler • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery
Not every mattress can bend with an adjustable base — but these can. Every mattress here is built to flex with the head and foot articulation of an adjustable base without damaging the comfort layers, so you can read, relax in Zero-Gravity or elevate your legs with confidence. In fact, over 90% of our mattresses are adjustable-compatible, spanning memory foam, hybrid and pocket-coil constructions from every brand — NM, Sealy, Serta, Beautyrest, Tempur-Pedic, Stearns & Foster and more — at every budget from about $109 to premium. Foam and hybrid models flex most easily, while rigid, thick tight-top innersprings generally don't. Pair any of these with one of our adjustable bases, and every mattress comes with a 365-night sleep trial and free delivery across Canada. • What this means: mattresses built to flex with an adjustable base's head & foot articulation • Over 90% of our mattresses are adjustable-compatible — every brand, every budget ($109+) • Best constructions for adjustable bases: memory foam, hybrid and pocket-coil • What usually won't work: rigid, thick tight-top innersprings that don't bend • Pairs with our adjustable bases (including split-king for independent sides) • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery
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

Serta is a globally recognized mattress brand celebrated for its comfort-first designs and sleep innovations. With over 90 years of experience, Serta continues to deliver quality mattresses that Canadians can trust.

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.

Extra Firm Cooling Mattresses Adjustable Bed Compatible Mattresses Temperature-Regulating Mattresses Serta
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  • SERTA® Modern Series™ 10" Extra-Firm Gel Foam Mattress SERTA® Modern Series™ 10" Extra-Firm Gel Foam Mattress brand icon
    • 10 Inch Model with Double Layers of Comfort
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    Twin XL In stock for fast delivery $553
    Double/Full $597
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  • SERTA® Classic® 11.5" Extra-Firm Tight Top Mattress SERTA® Classic® 11.5" Extra-Firm Tight Top Mattress brand icon
    • 800 Edition Custom Support Coil System
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    • Serta® Anti-Microbial Fibre Technology
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  • SERTA® Perfect Sleeper® Premium 14" Extra-Firm Tight Top Mattress SERTA® Perfect Sleeper® Premium 14" Extra-Firm Tight Top Mattress brand icon
    • 1000 Series 3-Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
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    Double/Full $975
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  • SERTA® Modern Series™ 10" Extra-Firm Gel Foam Mattress - Single/Twin SERTA® Modern Series™ 10" Extra-Firm Gel Foam Mattress - Single/Twin brand icon
    • 10 Inch Model with Double Layers of Comfort
    • Serta CoolWick Breathable Cover
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    • Designed and Built in Canada
    Single/Twin In stock for fast delivery $537
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  • SERTA® Modern Series™ 10" Extra-Firm Gel Foam Mattress - Twin XL SERTA® Modern Series™ 10" Extra-Firm Gel Foam Mattress - Twin XL brand icon
    • 10 Inch Model with Double Layers of Comfort
    • Serta CoolWick Breathable Cover
    • PureComfort Gel Foam with PureComfort Foam Support Core
    • Designed and Built in Canada
    Twin XL In stock for fast delivery $553
    Compare at $1,399
    Online availability icon In-Stock Only 5 left!
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  • SERTA® Modern Series™ 10" Extra-Firm Gel Foam Mattress - Double/Full SERTA® Modern Series™ 10" Extra-Firm Gel Foam Mattress - Double/Full brand icon
    • 10 Inch Model with Double Layers of Comfort
    • Serta CoolWick Breathable Cover
    • PureComfort Gel Foam with PureComfort Foam Support Core
    • Designed and Built in Canada
    Double/Full $597
    Compare at $1,499
    Online availability icon Backorder Available
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    Estimated delivery icon Estimated free delivery on Tuesday, Jun 30
  • OPEN BAG - SERTA® Modern Series™ 10" Extra-Firm Gel Foam Mattress - Queen OPEN BAG - SERTA® Modern Series™ 10" Extra-Firm Gel Foam Mattress - Queen brand icon
    • 10 Inch Model with Double Layers of Comfort
    • Serta CoolWick Breathable Cover
    • PureComfort Gel Foam with PureComfort Foam Support Core
    • Designed and Built in Canada
    Queen In stock for fast delivery $600
    Compare at $1,599
    Online availability icon In-Stock Only 1 left!
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  • OPEN BAG - SERTA® Classic® 11.5" Extra-Firm Tight Top Mattress - Double/Full OPEN BAG - SERTA® Classic® 11.5" Extra-Firm Tight Top Mattress - Double/Full brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support
    • Cool Twist® Gel Memory Foam + Serta® Support Gel Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
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    Compare at $1,699
    Online availability icon In-Stock Only 1 left!
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    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support
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    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
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    Online availability icon In-Stock Only 1 left!
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    • 10 Inch Model with Double Layers of Comfort
    • Serta CoolWick Breathable Cover
    • PureComfort Gel Foam with PureComfort Foam Support Core
    • Designed and Built in Canada
    Queen $645
    Compare at $1,599
    Online availability icon Backorder Available
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    Estimated delivery icon Estimated free delivery on Tuesday, Jun 30
  • OPEN BAG - SERTA® Classic® 11.5" Extra-Firm Tight Top Mattress - Queen OPEN BAG - SERTA® Classic® 11.5" Extra-Firm Tight Top Mattress - Queen brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support
    • Cool Twist® Gel Memory Foam + Serta® Support Gel Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
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    Online availability icon In-Stock Only 1 left!
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    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support
    • Cool Twist® Gel Memory Foam + Serta® Support Gel Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
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    Online availability icon In-Stock Only 4 left!
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