Memory Foam Temperature‑Regulating Mattresses | Year‑Round Comfort & Balance Grey Sealy Mattresses

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.
Temperature-regulating mattresses balance heat and airflow to hold a neutral, consistent sleep temperature through the night — not too hot, not too cold. They suit sleepers whose temperature swings. Compare every option below by brand, type, and feel.

Sealy is a pioneering mattress brand known for its science-backed support and comfort. It was voted the #1 most trusted mattress brand in Canada, reflecting over a century of quality craftsmanship.

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.

Memory Foam Temperature‑Regulating Mattresses | Year‑Round Comfort & Balance Grey Sealy
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  • NM 12″ Medium Firm Memory Foam Mattress NM 12″ Medium Firm Memory Foam Mattress brand icon
    • Optimal High Resilient Bio-Foam Core
    • Gel Infused Visco Memory Foam
    • Cotton Channel Quilted Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin In stock for fast delivery $571
    Twin XL In stock for fast delivery $629
    Double/Full In stock for fast delivery $639
    Queen $694
    Compare at $1,299
    King In stock for fast delivery $967
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 10
    Pickup available icon Only Pickup available to
  • SEALY® Posturepedic Luxury® 13.5" Medium Firm Hybrid Mattress SEALY® Posturepedic Luxury® 13.5" Medium Firm Hybrid Mattress brand icon
    • 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
    Twin XL In stock for fast delivery $1,404
    Double/Full $1,435
    Queen $1,515
    Compare at $3,599
    King $1,812
    Online availability icon In-Stock Only 2 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 10
    Pickup available icon Only Pickup available to
  • TEMPUR-PEDIC® Tempur-ProAlign® 2.0 Teal 12" Medium Firm Memory Foam Mattress TEMPUR-PEDIC® Tempur-ProAlign® 2.0 Teal 12" Medium Firm Memory Foam Mattress brand icon
    • Cool-To-The-Touch Removeable Cover
    • High-Stretch Performance Panel
    • TEMPUR-APR+™ Material
    • TEMPUR® Material
    • TEMPUR® Support Layer
    Single/Twin $2,499
    Twin XL In stock for fast delivery $2,599
    Double/Full In stock for fast delivery $2,899
    Queen In stock for fast delivery $2,999
    Compare at $5,099
    King $3,699
    Online availability icon In-Stock Only 8 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 10
    Pickup available icon Only Pickup available to
  • NM 12″ Medium Firm Memory Foam Mattress - Single/Twin NM 12″ Medium Firm Memory Foam Mattress - Single/Twin brand icon
    • Optimal High Resilient Bio-Foam Core
    • Gel Infused Visco Memory Foam
    • Cotton Channel Quilted Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin In stock for fast delivery $571
    Compare at $1,099
    Online availability icon In-Stock Only 2 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 10
    Pickup available icon Only Pickup available to
  • NM 12″ Medium Firm Memory Foam Mattress - Twin XL
    BEST IN CLASS BEST SELLING TOP RATED
    NM 12″ Medium Firm Memory Foam Mattress - Twin XL NM 12″ Medium Firm Memory Foam Mattress - Twin XL brand icon
    • Optimal High Resilient Bio-Foam Core
    • Gel Infused Visco Memory Foam
    • Cotton Channel Quilted Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Twin XL In stock for fast delivery $629
    Compare at $1,199
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 10
    Pickup available icon Only Pickup available to
  • NM 12″ Medium Firm Memory Foam Mattress - Double/Full NM 12″ Medium Firm Memory Foam Mattress - Double/Full brand icon
    • Optimal High Resilient Bio-Foam Core
    • Gel Infused Visco Memory Foam
    • Cotton Channel Quilted Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Double/Full In stock for fast delivery $639
    Compare at $1,199
    Online availability icon In-Stock Only 2 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 10
    Pickup available icon Only Pickup available to
  • OPEN BAG - NM 12″ Medium Firm Memory Foam Mattress - Queen OPEN BAG - NM 12″ Medium Firm Memory Foam Mattress - Queen brand icon
    • Optimal High Resilient Bio-Foam Core
    • Gel Infused Visco Memory Foam
    • Cotton Channel Quilted Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Queen In stock for fast delivery $645
    Compare at $1,299
    Online availability icon In-Stock Only 2 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 10
    Pickup available icon Only Pickup available to
  • NM 12″ Medium Firm Memory Foam Mattress - Queen
    BEST IN CLASS BEST SELLING TOP RATED
    NM 12″ Medium Firm Memory Foam Mattress - Queen NM 12″ Medium Firm Memory Foam Mattress - Queen brand icon
    • Optimal High Resilient Bio-Foam Core
    • Gel Infused Visco Memory Foam
    • Cotton Channel Quilted Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Queen $694
    Compare at $1,299
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tuesday, Jun 23
  • OPEN BAG - NM 12″ Medium Firm Memory Foam Mattress - King OPEN BAG - NM 12″ Medium Firm Memory Foam Mattress - King brand icon
    • 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 $899
    Compare at $1,799
    Online availability icon In-Stock Only 2 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 10
    Pickup available icon Only Pickup available to
  • NM 12″ Medium Firm Memory Foam Mattress - King
    BEST IN CLASS BEST SELLING TOP RATED
    NM 12″ Medium Firm Memory Foam Mattress - King NM 12″ Medium Firm Memory Foam Mattress - King brand icon
    • 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 Only 6 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 10
    Pickup available icon Only Pickup available to
  • SEALY® Posturepedic Luxury® 13.5" Medium Firm Hybrid Mattress - Twin XL SEALY® Posturepedic Luxury® 13.5" Medium Firm Hybrid Mattress - Twin XL brand icon
    • 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
    Twin XL In stock for fast delivery $1,404
    Compare at $3,499
    Online availability icon In-Stock Only 2 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 10
    Pickup available icon Only Pickup available to
  • SEALY® Posturepedic Luxury® 13.5" Medium Firm Hybrid Mattress - Double/Full SEALY® Posturepedic Luxury® 13.5" Medium Firm Hybrid Mattress - Double/Full brand icon
    • 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
    Double/Full $1,435
    Compare at $3,499
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tuesday, Jun 23

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