King Compatible with Adjustable Bed Adjustable Bed Compatible Mattresses Blue Mattresses Silver-Tone 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.
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 blue-accent or cool-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.
These mattresses feature a silver or grey-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 Compatible with Adjustable Bed Adjustable Bed Compatible Mattresses Blue Mattresses Silver-Tone Mattresses Mattress Selector

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King Compatible with Adjustable Bed Compatible with Adjustable Bed Base Blue Silver Clear all
  • SEALY® Essentials 6" Firm Tight Top Foam Mattress
    BEST IN CLASS TOP RATED TRENDING
    Sealy Essentials 6-inch firm tight-top foam mattress, quilted blue-grey top, white sides, navy piping Sealy Essentials Mattress Logo
    FIRM
    • CleanProtect™ Fabric
    • SealyLoft™ Quilt with Moisture Wicking Fibres
    • CertiPUR-US™ SealySupport™ HD Foam
    • CertiPUR-US™ SealySupport™ HD Core
    • SealySupport™ HD Foam
    King In stock for fast delivery $566
    Compare at $1,299
    Online availability icon In-Stock Only 8 left!
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  • SPRINGWALL® Comfort Pockets® Elite 14" Firm Tight-Top Mattress
    BEST IN CLASS TOP RATED TRENDING
    Springwall Comfort Pockets Elite 14-inch firm tight-top mattress, navy quilted cover with coral accent stitching Springwall Comfort Pockets Mattress Logo
    FIRM
    • 884 Full Perimeter Comfort Pockets® (Pocket Coils)
    • Cool Touch Stretch Knit Sleep Surface
    • Bio Comfort Quilted Stretch knit surface
    • HD Medium & Firm Layers of Bio Comfort Foam
    • Made In Canada
    King In stock for fast delivery $757
    Compare at $1,699
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  • SEALY® Essentials 8" Medium Firm Tight Top Foam Mattress
    FLASH SALE LIMITED STOCK
    Sealy Essentials 8-inch medium-firm tight-top foam mattress, quilted blue-grey top, white sides, navy piping Sealy Essentials Mattress Logo
    MEDIUM
    • CleanProtect™ Fabric
    • SealyLoft™ Quilt with Moisture Wicking Fibres
    • CertiPUR-US™ SealySupport™ HD Foam
    • CertiPUR-US™ SealySupport™ HD Core
    • SealySupport™ HD Foam
    King $591
    Compare at $1,399
    Online availability icon In-Stock Only 3 left!
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  • SPRINGWALL® Comfort Pockets® Elite 14" Ultra Plush Euro-Top Mattress
    FLASH SALE BEST IN CLASS TRENDING
    Springwall Comfort Pockets Elite 14-inch ultra-plush euro-top mattress, blue geometric-quilted top, navy sides Springwall Comfort Pockets Mattress Logo
    PLUSH
    • Full Perimeter Comfort Pockets® (Pocket Coils)
    • Cool Touch Stretch Knit Sleep Surface
    • Bio Comfort Quilted Stretch knit surface
    • HD Plush Layers of Bio Comfort Foam
    • Made In Canada
    King In stock for fast delivery $750
    Compare at $1,699
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  • SEALY® Essentials 11" Medium Firm Tight Top Mattress
    TOP RATED LIMITED STOCK
    Sealy Essentials 11-inch medium-firm tight-top mattress, blue-speckled flat top, white pinstriped sides Sealy Essentials Mattress Logo
    MEDIUM
    • CleanProtect™ Fabric
    • SealyLoft™ Quilt with Moisture Wicking Fibres
    • CertiPUR-US™ SealySupport™ HD Foam
    • Posture Touch® Pocket Coils
    • EssentialEdge™ Coil Support
    King $675
    Compare at $1,599
    Online availability icon Backorder Available
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    Estimated delivery icon Estimated free delivery on Tue, Aug 4
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  • CHIROFOAM™ XF 12" Extra-Firm Hybrid Mattress
    BEST IN CLASS BEST SELLING TOP RATED
    Chirofoam XF 12-inch extra-firm hybrid mattress, white damask top, full-height navy diamond-quilted sides Chirofoam Logo
    EX-FIRM
    • Cool Gel Infused Memory Foam
    • Extra Firm Support Chirofoam
    • Pro Lumbar Support
    • Canadian Made 1000 Hi-Loft Pocket Coils
    • 15 Year Warranty
    King In stock for fast delivery $836
    Compare at $1,499
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  • SERTA® Modern Series™ 8" Medium Firm Gel Foam Mattress
    BEST IN CLASS TOP RATED LIMITED STOCK
    Serta Modern Series 8-inch medium-firm gel foam mattress, low-profile white geometric cover, navy base Serta Modern Series Memory Foam Mattress Logo
    MEDIUM
    • 8 Inch Model with Double Layers of Comfort
    • Serta CoolWick Breathable Cover
    • PureComfort Gel Foam with PureComfort Foam Support Core
    • Designed and Built in Canada
    King $653
    Compare at $1,499
    Online availability icon In-Stock Only 3 left!
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  • SEALY® Essentials 10.5" Medium Firm Eurotop Foam Mattress
    BEST IN CLASS TOP RATED LIMITED STOCK
    Sealy Essentials 10.5-inch medium-firm euro-top foam mattress, blue-speckled top, white sides on black base Sealy Essentials Mattress Logo
    MEDIUM
    • CleanProtect™ Fabric
    • SealyLoft™ Quilt with Moisture Wicking Fibres
    • CertiPUR-US™ SealySupport™ HD Foam
    • CertiPUR-US™ SealySupport™ HD Core
    • SealySupport™ HD Foam
    King $655
    Compare at $1,499
    Online availability icon In-Stock Only 5 left!
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  • CHIROFOAM™ 12" Luxury Firm Hybrid Mattress
    BEST IN CLASS BEST SELLING TOP RATED
    Chirofoam 12-inch luxury-firm hybrid mattress, white damask-quilted top, navy diamond-quilted sides Chirofoam Logo
    FIRM
    • Cool Gel Infused Memory Foam
    • Firm Support Chirofoam
    • Pro Lumbar Support
    • Canadian Made 1000 Hi-Loft Pocket Coils
    • 15 Year Warranty
    King In stock for fast delivery $862
    Compare at $1,599
    Online availability icon In-Stock
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  • CHIROFOAM™ XF 10" Extra-Firm Memory Foam Mattress
    BEST IN CLASS BEST SELLING TOP RATED
    Chirofoam XF 10-inch extra-firm memory foam mattress, white geometric-knit top, pale blue edge, navy sides Chirofoam Logo
    EX-FIRM
    • Cool Gel Infused Memory Foam
    • Extra Firm Support Chirofoam
    • Pro Lumbar Support
    • Body Support Bio Foam Core
    • 15 Year Warranty
    King In stock for fast delivery $954
    Compare at $1,699
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  • SPRINGWALL® Chiropractic® 11" Firm Tight-Top Mattress
    BEST IN CLASS TOP RATED TRENDING
    Springwall Chiropractic 11-inch firm tight-top mattress, navy swirl-pattern top, darker navy sides Springwall Chiropractic Premium Mattress Logo
    FIRM
    • 1800 7-Zoned Chiropractic® Pocket Coils
    • Cold PE Technology Premium Surface Fabric
    • Graphite Gel PCM Comfort Layers
    • CoreBalance™ Support System with Micro Coils
    • HD Bio Comfort Foams
    King In stock for fast delivery $907
    Compare at $1,999
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  • SPRINGWALL® Chiropractic® 11" Plush Tight-Top Mattress
    TOP RATED LIMITED STOCK
    Springwall Chiropractic 11-inch plush tight-top mattress, navy swirl-pattern top, banded navy sides Springwall Chiropractic Premium Mattress Logo
    PLUSH
    • 1800 7-Zoned Chiropractic® Pocket Coils
    • Cold PE Technology Premium Surface Fabric
    • Graphite Gel PCM Comfort Layers
    • CoreBalance™ Support System with Micro Coils
    • HD Bio Comfort Foams
    King In stock for fast delivery $907
    Compare at $1,999
    Online availability icon In-Stock
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    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 20
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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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