Back Sleeper NM® Cozy Memory Foam Mattress Collection — Cooling, Pressure Relief & Low Motion Best Selling Mattress In A Box All Mattresses

Back sleepers do best on a mattress that supports the lower back while gently following the spine's natural curve — typically a medium to medium-firm feel. The options below balance support and pressure relief for back sleepers. Compare them by brand, feel, and profile.
Meet NM® Cozy Memory Foam—all‑foam mattresses that pair cooling, temperature‑regulating comfort with low motion transfer, pressure‑point relief, and reinforced edge support. Thoughtful touches include hypoallergenic care, eco‑friendly manufacturing, adjustable‑base compatibility, and mattress‑in‑a‑box convenience.
Best-selling mattresses are the models customers choose most often — proven, popular picks across every budget and sleep style. Compare every best-selling option below by brand, type, and feel.
Mattress-in-a-box options are compressed, rolled, and shipped straight to your door for quick, easy setup — just unbox and let it expand, with the same comfort and support. Compare every mattress-in-a-box option below by brand, type, and feel.

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.

Back Sleeper NM® Cozy Memory Foam Mattress Collection — Cooling, Pressure Relief & Low Motion Best Selling Mattress In A Box All Mattresses
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  • NM 8" Medium Firm Memory Foam Mattress
    BEST IN CLASS BEST SELLING
    NM 8" Medium Firm Memory Foam Mattress NM 8" Medium Firm Memory Foam Mattress brand icon
    • High Density Foam Core
    • Cool Gel Memory Foam
    • Hypoallergenic Bamboo Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin $289
    Double/Full $399
    Twin XL $399
    Queen $428
    Compare at $899
    King $640
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 4
    Pickup available icon Only Pickup available to

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