King Memory Foam Compatible with Adjustable Bed 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.
Memory foam mattresses contour to your body, relieving pressure at the hips and shoulders while absorbing motion so you won't feel your partner move. They give a cradling, "hug" feel that suits side sleepers and couples. Browse every memory foam option below by brand, feel, and profile.
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 Memory Foam Compatible with Adjustable Bed Grey Mattresses Mattress Selector

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King Memory Foam Compatible with Adjustable Bed Grey Clear all
  • NM Cozy 10" Firm Memory Foam Mattress
    BEST IN CLASS TOP RATED TRENDING
    National Mattress 10-inch firm memory-foam mattress, white channel-quilted tight-top, grey woven sides NM Cozy Collection Logo
    FIRM
    • Optimal High Resilient Bio-Foam Core
    • Visco Memory Foam
    • Pressure Relieving Comfort Foam
    • Cotton Channel Quilted Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    King In stock for fast delivery $887
    Compare at $1,599
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 22
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  • NM Cozy 12" Medium Firm Memory Foam Mattress
    BEST IN CLASS TOP RATED TRENDING
    National Mattress 12-inch medium-firm memory-foam mattress, tall white channel-quilted top, grey woven sides NM Cozy Collection Logo
    MEDIUM
    • Optimal High Resilient Bio-Foam Core
    • Gel Infused Visco Memory Foam
    • Cotton Channel Quilted Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    King In stock for fast delivery $967
    Compare at $1,799
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 22
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  • SEALY® Posturepedic Luxury® 13.5" Medium Firm Hybrid Mattress
    LIMITED STOCK
    Sealy Posturepedic Luxury 13.5-inch medium-firm hybrid mattress, grey wavy tight-top, black sides, blue badge Sealy Posturepedic Luxury Mattress Logo
    MEDIUM
    • SealyCool™ Fabric Premium Ultra-Stretch Cover
    • Silhouette™ Memory Foam
    • SealyMAX™ Core System featuring SealyResponse™ PRO & SolidSupport™ Pocket Coils
    • SolidEdge™ PRO Coil Edge
    • Sealy ComfortSense™ Memory Foam with SealyCool™
    • Zoned Pocket Coil Support
    King $1,812
    Compare at $4,299
    Online availability icon In-Stock Only 3 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 22
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  • SEALY® Posturepedic Luxury® 14.5" Firm Hybrid Mattress
    LIMITED STOCK
    Sealy Posturepedic Luxury 14.5-inch firm hybrid mattress, tall grey wavy tight-top, black sides, blue badge Sealy Posturepedic Luxury Mattress Logo
    FIRM
    • SealyCool™ Fabric Premium Ultra-Stretch Cover
    • Silhouette™ Memory Foam
    • SealyMAX™ Core System featuring SealyResponse™ PRO & SolidSupport™ Pocket Coils
    • SolidEdge™ PRO Coil Edge
    • Sealy ComfortSense™ Memory Foam with SealyCool™
    • Zoned Pocket Coil Support
    King $1,990
    Compare at $4,699
    Online availability icon In-Stock Only 8 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 22
    Pickup available icon Only Pickup available to
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  • TEMPUR-PEDIC® Tempur-ProAlign® 2.0 Orange 12" Firm Memory Foam Mattress
    EXCLUSIVE OFFER LIMITED STOCK
    Tempur-Pedic Tempur-ProAlign 2.0 12-inch firm memory foam mattress, blue swirl-knit top, orange corner tag Tempurpedic Luxury Memory Foam Mattress Logo
    FIRM
    • Cool-To-The-Touch Removeable Cover
    • High-Stretch Performance Panel
    • TEMPUR-APR+™ Material
    • TEMPUR® Material
    • TEMPUR® Support Layer
    King $4,049
    Compare at $5,999
    Online availability icon In-Stock Only 9 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 22
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  • TEMPUR-PEDIC® Tempur-ProAlign® 2.0 Teal 12" Medium Firm Memory Foam Mattress
    EXCLUSIVE OFFER LIMITED STOCK
    Tempur-Pedic Tempur-ProAlign 2.0 12-inch medium firm memory foam mattress, blue swirl-knit top on navy base Tempurpedic Luxury Memory Foam Mattress Logo
    MEDIUM
    • Cool-To-The-Touch Removeable Cover
    • High-Stretch Performance Panel
    • TEMPUR-APR+™ Material
    • TEMPUR® Material
    • TEMPUR® Support Layer
    King $4,049
    Compare at $5,999
    Online availability icon In-Stock Only 7 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 22
    Pickup available icon Only Pickup available to
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  • TEMPUR-PEDIC® Tempur-LuxeAlign® 2.0 Orange 13" Firm Memory Foam Mattress
    EXCLUSIVE OFFER LIMITED STOCK
    Tempur-Pedic Tempur-LuxeAlign 2.0 13-inch firm memory foam mattress, grey wave-line top, navy sides, orange tab Tempurpedic Luxury Memory Foam Mattress Logo
    FIRM
    • Cool-To-The-Touch Removeable Cover
    • High-Stretch Performance Panel
    • TEMPUR-APR+™ Material
    • TEMPUR® Material
    • TEMPUR® Ergonomic Support Layer
    King $5,099
    Compare at $7,199
    Online availability icon In-Stock Only 8 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jul 22
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7 Items

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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