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Medium Memory Foam Foam Core Adjustable Bed Base Friendly Breathable Mattresses All

Medium-firmness mattresses — often called medium-firm — sit right between plush and firm, which is why they're the most popular and versatile feel we carry. You get enough cushioning to relieve pressure with enough support to keep your spine aligned, making medium a safe choice for back sleepers, combination sleepers who change positions through the night, and couples who need a compromise between two preferences. Shop medium models from Sealy, Serta, Beautyrest, Stearns & Foster, iComfort and Tempur-Pedic across memory foam, hybrid, euro-top, pillow-top and tight-top builds — with free delivery across Canada. • Feel: medium sits between plush and firm — balanced and the most versatile of our four comfort levels • Also called "medium-firm" — the middle of the firmness scale • Best for: back sleepers, combination sleepers, couples, and most body types • Consider plush if you sleep on your side; firm if you sleep on your stomach or want more support • Constructions: euro-top, tight-top, pillow-top, memory foam and hybrid • Brands: Sealy, Serta, Beautyrest, Stearns & Foster, iComfort, Tempur-Pedic, Springwall & NM • Prices: from $171 to premium
Every mattress here has at least one layer of memory foam, in the comfort layers or quilted into the cover. Memory foam softens with body heat and slowly moulds to your shape, easing pressure at the shoulders and hips and absorbing movement. You will find it in all-foam beds and in hybrids, where it sits above pocket coils. For all-foam memory foam beds only, use Mattress Type.
Foam core mattresses have no springs. The support comes from a core of high-density foam, with comfort layers of memory foam, gel foam or responsive foam on top. Foam absorbs movement, so a partner turning over is hard to feel, and with no coils the bed stays quiet. Use Mattress Type to choose between Memory Foam and Foam for the feel of the layers.
Shop adjustable base friendly mattresses from Beautyrest, Serta, Sealy, Tempur-Pedic, Springwall, iComfort, and Stearns & Foster at National Mattress — 169+ models in memory foam, hybrid, latex, eurotop, and tight-top constructions from $59 to $6,640. Every mattress in this collection is manufacturer-verified to flex and articulate with an adjustable base without voiding the warranty. Available in Twin through King sizes with firmness levels from extra firm to plush, all built with CertiPUR-US® certified foams, including Canadian-made options. Free delivery is available, along with a 365-night sleep trial and 5–15 year warranty coverage.
Breathable mattresses are built to move air, not trap it. Through ventilated and open-cell foams, breathable knit and Tencel covers, and pocket-coil airflow, they let heat and moisture escape instead of building up under you — so your sleep surface stays fresher, drier and more comfortable through the night. It's a great fit if you sweat at night, live in a humid climate, or just don't like that stuffy, sunk-in feel. You'll find breathable builds across every brand — Sealy, Serta, Beautyrest, iComfort, Tempur-Pedic, Chirofoam and our own NM line — in foam, hybrid and pocket-coil. Sleep especially hot? See our cooling mattresses for active heat-wicking. Every mattress includes a 365-night sleep trial and free delivery across Canada. • What it means: airflow-focused builds that let heat and moisture escape instead of trapping them • How it works: ventilated/open-cell foams, breathable knit & Tencel covers, pocket-coil airflow • The benefit: a fresher, drier, less stuffy sleep surface • Best for: sweaty sleepers, humid climates, or anyone who dislikes a sunk-in, stuffy feel • Sleep hot? See cooling mattresses; want a steady temp? See temperature-regulating • Across every brand and firmness • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery
Medium Memory Foam Foam Core Adjustable Bed Base Friendly Breathable Mattresses All
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  • Serta iComfort 13-inch medium firm memory foam mattress, light blue swirl-quilt top, charcoal sides Serta iComfort Logo
    • CoolFeel™ Fabric
    • 5 ZoneResponse™ Design
    • Perfect Conform™ Graphite Memory Foam
    • Deep Reaction® Max Gel Memory Foam + iComfort® Gel Memory Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    Twin XL $1,899
    Double/Full $1,999
    Queen $2,099
    Compare at $3,099
    King $2,199
    In-Store availability icon On Display:
    Estimated delivery icon Order today to receive by Tue, Nov 24
  • MLILY Manchester United Dream 12" Memory Foam Mattress, white top with black-and-red sides and crest tag MLILY® Manchester United collection logo
    • Bamboo Charcoal AeroFusion™ Memory Foam
    • AdaptiFoam™ Comfort Layer
    • Flex Support Base Foam
    • Breathable Tencel® Cover
    • 10 Year Warranty
    Single/Twin $799
    Twin XL $859
    Double/Full $1,039
    Queen In stock for fast delivery $1,199
    Compare at $2,199
    King $1,459
    Online availability icon In-Stock Only 1 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Nov 8on select sizesfast delivery truck icon
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    M5H 2N1
  • NM® Essential 10" Memory Foam Mattress - 1 NM® Essentials collection logo
    • 3″ Gel AeroFusion® Memory Foam
    • Standard Comfort Knit Cover
    • Flex Support Foam Core
    • 10 Year Warranty
    Single/Twin $496
    Twin XL $536
    Double/Full $677
    Queen In stock for fast delivery $797
    Compare at $1,699
    King $961
    Online availability icon In-Stock Only 1 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Nov 8on select sizesfast delivery truck icon
    Pickup available icon Only Pickup available to
    M5H 2N1
  • MLILY WellFlex 3.0 12" Plush Memory Foam Mattress, blue-tabbed white top, wave-embossed cover over charcoal base MLILY® WellFlex collection logo
    • Gel AeroFusion® Memory Foam
    • BioBreeze™ Memory Foam
    • Liquid Gel CoolFlex™ Foam
    • Cooling Organic Knit Cover
    • Flex Support Base Foam
    • 10 Year Warranty
    Single/Twin $1,899
    Twin XL $1,899
    Double/Full $2,199
    Queen $2,499
    Compare at $2,799
    King $2,999
    In-Store availability icon On Display:
    Estimated delivery icon Order today to receive by Mon, Nov 16

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