King Twin Size Temperature-Regulating Mattresses Adjustable Bed Compatible Mattresses Grey 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.
Twin Size mattresses measure 39" × 75" — the most compact standard adult size. They're ideal for children's rooms, bunk beds, daybeds, single sleepers, and guest or small bedrooms where space is tight. Compare every single/twin option below by brand, feel, and price.
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
These mattresses feature a grey or neutral-tone cover — and since that cover sits under your sheets, colour won't change how you sleep. To find the right bed, shop by size (twin to king), comfort (plush, medium, firm), or type (memory foam, hybrid, pocket coil). Every mattress includes a 365-night sleep trial and free delivery across Canada.
King Twin Size Temperature-Regulating Mattresses Adjustable Bed Compatible Mattresses Grey Mattresses Mattress Selector

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King Single/Twin Temperature Regulating Compatible with Adjustable Bed Base Grey Clear all
  • SEALY® Posturepedic Luxury® 13.5" Firm Hybrid Tight Top Mattress
    BEST IN CLASS TOP RATED LIMITED STOCK
    Sealy Posturepedic Luxury 13.5-inch firm hybrid tight-top King mattress, navy swirl cover, charcoal side Sealy Posturepedic Luxury Mattress Logo
    FIRM
    • 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
    Twin XL In stock for fast delivery $929
    Double/Full $943
    Queen $1,054
    Compare at $2,499
    King $1,307
    Online availability icon In-Stock Only 4 left!
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  • SEALY® Posturepedic® Natural Origins 13.5" Firm Tight Top Latex Mattress
    LIMITED STOCK
    Sealy Natural Origins 13.5-inch firm tight-top latex mattress, flat tufted white top, grey-black diamond sides Sealy Natural Origins Mattress Logo
    FIRM
    • 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 $890
    Twin XL In stock for fast delivery $926
    Double/Full $940
    Queen $998
    Compare at $2,399
    King $1,322
    Online availability icon In-Stock Only 6 left!
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  • SPRINGWALL® Luxury Chiropractic® 13.5" Firm Tight-Top Mattress
    LIMITED STOCK NEW ARRIVAL
    Springwall Luxury Chiropractic 13.5-inch firm tight-top mattress, tan flat top, grey sides, copper piping Springwall H2 Chiropractic Luxury Mattress Logo
    FIRM
    • 2400 7-Zoned Chiropractic® Pocket Coils
    • Luxurious Surface Fabric & Phase-Changing Properties
    • AIRWAYS™ Specialty Foam
    • HD Bio Comfort Foam
    • Handcrafted and Individually Signed For Authenticity
    Single/Twin $704
    Twin XL In stock for fast delivery $880
    Double/Full In stock for fast delivery $894
    Queen In stock for fast delivery $990
    Compare at $2,199
    King In stock for fast delivery $1,353
    Online availability icon In-Stock
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  • BEAUTYREST® World Class™ 12.5" Hybrid Medium-Firm Mattress
    LIMITED STOCK
    Beautyrest World Class 12.5-inch hybrid medium-firm mattress, angled view with blue chevron top and blue trim Beautyrest World Class Mattress Collection Logo
    MEDIUM
    • 1000 Beautyrest® Pocketed Coil Technology
    • Beautyrest® ActiveResponse Memory Foam
    • Beautyrest® Medium Gel Foam
    • World Class Relief™ HD Foam
    • InfiniCool™ Technology
    Twin XL In stock for fast delivery $1,125
    Double/Full $1,142
    Queen $1,196
    Compare at $2,899
    King $1,363
    Online availability icon In-Stock Only 4 left!
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  • BEAUTYREST® World Class™ 12.5" Hybrid Firm Mattress
    BEST IN CLASS LIMITED STOCK
    Beautyrest World Class 12.5-inch firm hybrid mattress, low-profile teal chevron tight-top, grey sides Beautyrest World Class Mattress Collection Logo
    FIRM
    • 1000 Beautyrest® Pocketed Coil Technology
    • Beautyrest® ActiveResponse Memory Foam
    • Beautyrest® Firm Gel Foam
    • World Class Relief™ HD Foam
    • InfiniCool™ Technology
    Twin XL In stock for fast delivery $1,125
    Double/Full In stock for fast delivery $1,142
    Queen In stock for fast delivery $1,196
    Compare at $2,899
    King $1,363
    Online availability icon In-Stock Only 7 left!
    In-Store availability icon On Display:
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  • SEALY® Posturepedic Luxury® 14.5" Medium Firm Hybrid Eurotop Mattress
    BEST IN CLASS TOP RATED TRENDING
    Sealy Posturepedic Luxury 14.5-inch medium-firm hybrid euro-top mattress, quilted white top, charcoal sides Sealy Posturepedic Luxury Mattress Logo
    MEDIUM
    • 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
    Twin XL In stock for fast delivery $1,066
    Double/Full $1,082
    Queen $1,175
    Compare at $2,799
    King $1,371
    Online availability icon In-Stock Only 4 left!
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  • BEAUTYREST® World Class™ 13" Tight Top Firm Mattress
    LIMITED STOCK
    Beautyrest World Class 13-inch tight top firm mattress, angled view with teal top and purple trim Beautyrest World Class Mattress Collection Logo
    FIRM
    • 1000 Beautyrest® Pocketed Coil Technology
    • Beautyrest® ActiveResponse Memory Foam
    • SurfaceTouch™ Gel Memory Foam
    • World Class Relief™ HD Foam
    • InfiniCool™ MAX Technology
    • Beautyrest® Natural Lux Fibre Technology
    Single/Twin In stock for fast delivery $1,142
    Twin XL In stock for fast delivery $1,196
    Double/Full In stock for fast delivery $1,214
    Queen In stock for fast delivery $1,270
    Compare at $2,999
    King $1,438
    Online availability icon In-Stock Only 9 left!
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  • SEALY® Posturepedic® Natural Origins 16" Plush Euro Top Latex Mattress
    BEST IN CLASS LIMITED STOCK
    Sealy Natural Origins 16-inch plush euro-top latex mattress, deeply tufted grey top, grey-black diamond sides Sealy Natural Origins Mattress Logo
    PLUSH
    • 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 $976
    Twin XL In stock for fast delivery $1,068
    Double/Full $1,084
    Queen In stock for fast delivery $1,161
    Compare at $2,699
    King $1,495
    Online availability icon In-Stock Only 7 left!
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  • BEAUTYREST® World Class™ 15.5" Pillow Top Medium-Firm Mattress
    FLASH SALE BEST IN CLASS LIMITED STOCK
    Beautyrest World Class 15.5-inch medium-firm pillow-top mattress, teal quilted top, charcoal sides, magenta piping Beautyrest World Class Mattress Collection Logo
    MEDIUM
    • 1000 Beautyrest® Pocketed Coil Technology
    • Beautyrest® ActiveResponse Memory Foam
    • SurfaceTouch™ Gel Memory Foam
    • World Class Relief™ HD Foam
    • InfiniCool™ MAX Technology
    • Beautyrest® Natural Lux Fibre Technology
    Queen SOLD OUT
    Compare at $3,199
    Single/Twin $1,220
    Twin XL In stock for fast delivery $1,268
    Double/Full $1,287
    King $1,500
    Online availability icon In-Stock Only 3 left!
    In-Store availability icon On Display:
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  • BEAUTYREST® World Class™ 16" Pillow Top Medium-Firm Mattress
    FLASH SALE BEST IN CLASS LIMITED STOCK
    Beautyrest World Class 16-inch medium-firm pillow-top mattress, dark quilted top, grey sides, magenta badge Beautyrest World Class Mattress Collection Logo
    MEDIUM
    • 1000 Beautyrest® Pocketed Coil Technology
    • 2X Beautyrest® ActiveResponse Memory Foam
    • SurfaceTouch™ Gel Memory Foam
    • World Class Relief™ HD Foam
    • InfiniCool™ MAX Technology
    • Beautyrest® Natural Lux Fibre Technology
    Single/Twin $1,368
    Twin XL In stock for fast delivery $1,425
    Double/Full $1,447
    Queen In stock for fast delivery $1,500
    Compare at $3,599
    King $1,500
    Online availability icon In-Stock Only 6 left!
    In-Store availability icon On Display:
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  • BEAUTYREST® World Class™ 15.5" Pillow Top Plush Mattress
    LIMITED STOCK
    Beautyrest World Class 15.5-inch pillow top plush mattress, teal pillow top with purple trim and grey sides Beautyrest World Class Mattress Collection Logo
    PLUSH
    • 1000 Beautyrest® Pocketed Coil Technology
    • Beautyrest® ActiveResponse Memory Foam
    • SurfaceTouch™ Gel Memory Foam
    • World Class Relief™ HD Foam
    • InfiniCool™ MAX Technology
    • Beautyrest® Natural Lux Fibre Technology
    Single/Twin $1,220
    Twin XL In stock for fast delivery $1,268
    Double/Full $1,287
    Queen In stock for fast delivery $1,351
    Compare at $3,199
    King $1,513
    Online availability icon In-Stock Only 8 left!
    In-Store availability icon On Display:
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  • BEAUTYREST® World Class™ 14.5" Tight Top Firm Mattress
    LIMITED STOCK
    Beautyrest World Class 14.5-inch firm tight-top mattress, dark teal quilted top, charcoal sides with blue piping Beautyrest World Class Mattress Collection Logo
    FIRM
    • 1000 Beautyrest® Pocketed Coil Technology
    • 2X Beautyrest® ActiveResponse Memory Foam
    • SurfaceTouch™ Gel Memory Foam
    • World Class Relief™ HD Foam
    • InfiniCool™ MAX Technology
    • Beautyrest® Natural Lux Fibre Technology
    Single/Twin In stock for fast delivery $1,220
    Twin XL In stock for fast delivery $1,268
    Double/Full In stock for fast delivery $1,287
    Queen In stock for fast delivery $1,351
    Compare at $3,199
    King $1,513
    Online availability icon In-Stock
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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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