King Plush Extra Firm Luxury Mattresses Temperature-Regulating Mattresses Compatible with Adjustable Bed Adjustable Bed Compatible Mattresses Mattress Selector

King mattresses measure 76" × 80" — the widest standard size, giving each partner the same personal space as a twin. They're the top choice for couples who want maximum room, families who co-sleep, and larger master bedrooms. Compare every king option below by brand, feel, and price.
Plush mattresses are the softest comfort level we carry — built with thick pillow-top and euro-top comfort layers (plus plush memory foam and hybrid options) that cradle your shoulders and hips for a soft, sink-in feel. Plush is the top choice for side sleepers and lighter-weight sleepers who need extra cushioning at the pressure points; back and stomach sleepers, or anyone who wants firmer support, may prefer our medium or firm options. Shop plush models from Sealy, Serta, Beautyrest, Stearns & Foster, iComfort and Tempur-Pedic in memory foam, hybrid and pocket-coil builds — with free delivery across Canada. • Feel: plush is the softest of our four comfort levels (plush, medium, firm, extra firm) • Best for: side sleepers and lighter-weight sleepers — cushions shoulders and hips • Consider firmer if: you sleep on your back or stomach, are heavier, or want more support • Plush constructions: pillow-top, euro-top, plush memory foam and hybrid • Builds: memory foam, hybrid and pocket-coil • Brands: Sealy, Serta, Beautyrest, Stearns & Foster, iComfort & Tempur-Pedic • Prices: from $224 to premium
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
Luxury is the top of our lineup — the finest mattresses we carry, built with the most advanced comfort technology and the premium materials money can buy. This is where you'll find Tempur-Pedic's signature TEMPUR® memory foam (Tempur-LuxeAlign and ProAlign), Serta's iComfort PRO all-latex and europillowtop beds, and Stearns & Foster's hand-finished Lux Estate, alongside other premium flagships from Beautyrest and Sealy. Expect deeper pressure relief, superior motion isolation and exceptional durability, in plush, medium and firm. Luxury mattresses range from about $819 to $6,999, and every one includes a 365-night sleep trial, price-match guarantee and free delivery across Canada. • What "luxury" means: our finest, flagship mattresses — the most advanced comfort tech and premium materials • Featured flagships: Tempur-Pedic (LuxeAlign & ProAlign), Serta iComfort PRO, Stearns & Foster Lux Estate • Premium builds: TEMPUR® memory foam, all-latex, thick europillowtop and hybrid • What you get: deeper pressure relief, superior motion isolation and exceptional durability • Price range: about $819 to $6,999 • On a budget? See our great-value or premium mattresses • 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
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
King Plush Extra Firm Luxury Mattresses Temperature-Regulating Mattresses Compatible with Adjustable Bed Adjustable Bed Compatible Mattresses Mattress Selector

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Clear all King Plush Extra Firm Luxury Temperature Regulating Compatible with Adjustable Bed Compatible with Adjustable Bed Base

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King Plush Extra Firm Luxury Temperature Regulating Compatible with Adjustable Bed Compatible with Adjustable Bed Base Clear all
  • SPRINGWALL® Luxury Chiropractic® 16" Ultra Plush Pillow Top Mattress
    LIMITED STOCK NEW ARRIVAL
    Springwall Luxury Chiropractic 16-inch ultra-plush pillow-top mattress, tan crown, grey sides, copper piping Springwall H2 Chiropractic Luxury Mattress Logo
    PLUSH
    • 2400 7-Zoned Chiropractic® Pocket Coils
    • Luxurious Surface Fabric & Phase-Changing Properties
    • AIRWAYS™ Specialty Foam
    • HD Bio Comfort Foam + NgLatex®
    • Handcrafted and Individually Signed For Authenticity
    King In stock for fast delivery $1,663
    Compare at $3,599
    Online availability icon In-Stock Only 1 left!
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    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Aug 4
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  • SEALY® Posturepedic Luxury® 15.5" Plush Hybrid Pillowtop Mattress
    FLASH SALE LIMITED STOCK
    Sealy Posturepedic Luxury 15.5-inch plush hybrid pillow-top mattress, tufted white dome, charcoal sides Sealy Posturepedic Luxury Mattress Logo
    PLUSH
    • SealyMAX™ Core System featuring SealyResponse™ PRO & SolidSupport™ Pocket Coils
    • GelSense™ MAX Memory Foam
    • SealySupport™ Gel HD Foam
    • SupremeLoft™ Quilt featuring Silk & Wool
    • SealyCool™ Fabric
    • SolidEdge™ PRO Coil Edge
    King $1,930
    Compare at $4,699
    Online availability icon Backorder Available
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    Estimated delivery icon Estimated free delivery to M5H 2N1 on Tue, Aug 18
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  • SERTA® Perfect Comfort X™ 15" Plush Super Pillow Top Mattress
    LIMITED STOCK
    Serta Perfect Comfort X 15-inch plush super-pillow-top mattress, navy cover with white floral top, navy sides Serta Perfect Comfort X Luxury Mattress Logo
    PLUSH
    • 2550 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • Cool Twist® Gel Memory Foam
    • Perfect Conform™ Micro Coils
    • CoolFeel Fabric™ w/ QuiltLoft™ Memory Foam
    • Designed and Made in Canada
    King $1,998
    Compare at $4,799
    Online availability icon Backorder Available
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    Estimated delivery icon Estimated free delivery to M5H 2N1 on Tue, Aug 18
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  • SERTA® Perfect Comfort X™ 14" Plush Hybrid Mattress
    LIMITED STOCK
    Serta Perfect Comfort X 14-inch plush hybrid mattress, navy cover, white sunburst quilt, charcoal sides Serta Perfect Comfort X Luxury Mattress Logo
    PLUSH
    • 2550 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • Deep Reaction® Max Gel Memory Foam + Cool Twist® Gel Memory Foam
    • Perfect Conform™ Micro Coils
    • CoolFeel Fabric™ w/ QuiltLoft™ Memory Foam
    • Designed and Made in Canada
    King $1,998
    Compare at $4,799
    Online availability icon Backorder Available
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    Estimated delivery icon Estimated free delivery to M5H 2N1 on Tue, Aug 18
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  • SERTA® iComfort® 13" Plush Memory Foam Mattress
    EXCLUSIVE OFFER LIMITED STOCK
    Serta iComfort 13-inch plush memory foam mattress, blue-white quilted swirl top, charcoal woven sides Serta iComfort Logo
    PLUSH
    • CoolFeel™ Fabric
    • 5 ZoneResponse™ Design
    • Perfect Conform™ Graphite Memory Foam
    • iComfort® Gel Memory Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    King $2,499
    Compare at $3,699
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    Estimated delivery icon Estimated free delivery to M5H 2N1 on Tue, Aug 18
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  • BEAUTYREST® Centennial® 15.5" Pillow Top Plush Mattress
    EXCLUSIVE OFFER LIMITED STOCK
    Beautyrest Centennial 15.5-inch pillow top plush mattress, black sparkled pillow top with grey sides Beautyrest Centennial Luxury Mattress Logo
    PLUSH
    • 1850 T3 Triple Stranded Pocketed Coil® and Micro Coil Technology
    • SurfaceTouch™ Gel Memory Foam
    • Self-Response™ Latex
    • Beautyrest® Gel Memory Foam
    • Beautyrest® Gel Support Foam
    • Sleep Climate™ Surface enhanced with cooling yarn
    King $2,749
    Compare at $4,199
    Online availability icon Backorder Available
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    Estimated delivery icon Estimated free delivery to M5H 2N1 on Tue, Aug 18
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  • STEARNS & FOSTER® Estate® 16" Plush Euro Top Mattress
    EXCLUSIVE OFFER LIMITED STOCK
    Stearns & Foster Estate 16-inch plush euro-top mattress, pillowed blue-white top, navy ribbed sides, Estate badge Stearns & Foster Luxury Mattress Logo
    PLUSH
    • Indulge Quilt With Silk & Wool Fibres
    • PrecisionMatch™ Memory Foam
    • PrimaSense™ Gel Infused Comfort Layers
    • Additional PrimaMatch™ Memory Foam
    • Intellicoil® Innerspring (Pocket Coil)
    • Handmade By Certified Master Craftsman
    King In stock for fast delivery $2,899
    Compare at $4,799
    Online availability icon In-Stock Only 2 left!
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  • SERTA® iComfort® 14" Plush Memory Foam Mattress
    FLASH SALE EXCLUSIVE OFFER LIMITED STOCK
    Serta iComfort 14-inch plush memory foam mattress, deep blue radial-quilt top, charcoal sides Serta iComfort Logo
    PLUSH
    • CoolFeel™ Fabric
    • 5 ZoneResponse™ Design
    • Perfect Conform™ Graphite Memory Foam
    • Deep Reaction® Max Gel Memory Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    King In stock for fast delivery $2,999
    Compare at $4,499
    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, Aug 4
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  • SERTA® iComfort® PRO 12.5" Plush Latex Mattress
    EXCLUSIVE OFFER LIMITED STOCK NEW ARRIVAL
    Serta iComfort PRO 12.5-inch plush latex mattress, puffy cream tufted top, denim-blue sides Serta iComfort Pro Memory Foam Mattress Logo
    PLUSH
    • CoolFeel™ Pro System
    • 5 ZoneResponse™ Design
    • Graphite-Infused True Response™ Latex Foam
    • True Response™ Latex Foam
    • Derived from 100% Natural Latex
    • 100% Canada Assembled
    King $3,099
    Compare at $4,499
    Online availability icon Backorder Available
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    Estimated delivery icon Estimated free delivery to M5H 2N1 on Tue, Aug 18
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  • BEAUTYREST® Centennial® 16.5" Super Pillow Top Ultra Plush Mattress
    EXCLUSIVE OFFER LIMITED STOCK
    Beautyrest Centennial 16.5-inch ultra-plush super-pillow-top mattress, puffy black gold-flecked top Beautyrest Centennial Luxury Mattress Logo
    PLUSH
    • 2850 T3 Triple Stranded Pocketed Coil® and Micro Coil Technology
    • SurfaceTouch™ Gel Memory Foam
    • Self-Response™ Latex
    • Micro Diamond™ Memory Foam
    • Beautyrest® Gel Memory Foam
    • Sleep Climate™ Surface enhanced with cooling yarn
    King $3,340
    Compare at $5,099
    Online availability icon Backorder Available
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  • TEMPUR-PEDIC® Tempur-Align® 2.0 Blue 11" Soft Memory Foam Mattress
    EXCLUSIVE OFFER LIMITED STOCK
    Tempur-Pedic Tempur-Align 2.0 11-inch soft memory foam mattress, white wave-knit cover on navy base Tempurpedic Luxury Memory Foam Mattress Logo
    PLUSH
    • Premium Fabric Cover
    • Phase Change Material
    • TEMPUR® Material
    • New generation 2.0 enhancements
    King $3,499
    Compare at $5,099
    Online availability icon Backorder Available
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    Estimated delivery icon Estimated free delivery to M5H 2N1 on Tue, Aug 18
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  • STEARNS & FOSTER® Lux Estate® 17" Plush Europillowtop Mattress
    BEST IN CLASS EXCLUSIVE OFFER LIMITED STOCK
    Stearns & Foster Lux Estate 17-inch plush euro-pillow-top mattress, puffy blue top, navy sides, coral tabs Stearns & Foster Lux Estate Luxury Mattress Logo
    PLUSH
    • Indulge Quilt With Silk & Wool Fibres
    • Cooling Fibres With Tencel™
    • PrecisionMatch™ Memory Foam
    • Supportive Latex Comfort Layer
    • PrimaSense™ Gel Infused Comfort Layers
    • Intellicoil® Innerspring (Pocket Coil) With Intellicoil® Micro HD
    • Handmade By Certified Master Craftsman
    King $3,549
    Compare at $5,799
    Online availability icon Backorder Available
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    Estimated delivery icon Estimated free delivery to M5H 2N1 on Tue, Aug 18
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Upgrade your sleep at National Mattress

Discover a mattress that transforms your sleep into a truly rejuvenating experience. We offer a wide variety of options to suit every sleep style and preference, ensuring a better night's sleep.

Why Choose Us?

  • Variety: From plush to firm, we have options for every body type and sleep style.
  • Quality: Trusted brands and top-notch materials for long-lasting comfort.
  • Sleep Trials & Warranties: Enjoy peace of mind with flexible trials and warranties.
  • Expert Advice: Get personalized recommendations from our sleep specialists.

Mattress Selection Includes

  • Memory Foam: Contours to your body for personalized comfort and pressure relief.
  • Hybrid: Combines responsive springs with foam for balanced support and comfort.
  • Innerspring: Provides firm support, bounce, and cooling airflow.
  • Latex: Hypoallergenic, eco-friendly, and exceptionally comfortable.
  • Adjustable Beds: Customize your sleep position for optimal comfort.
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