King Split Head - Medium & Medium-Firm Mattresses | Balanced Comfort - New Mattress Arrivals | Latest Models from Top Brands - Cooling Mattresses | Gel Foam & Cool-Touch for Hot Sleepers - Compatible with Adjustable Bed - Mattress Brands and Makers in Canada | National Mattress

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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

See what's new at National Mattress — our latest arrivals, freshly added from the brands you trust. Right now that includes brand-new premium collections like the Beautyrest Centennial Hybrid and the Serta iComfort Zip, bringing the newest comfort technology, updated constructions and fresh designs across plush, medium and firm. New arrivals span every size, and because the lineup refreshes as each season's models land, it's the best place to discover the latest before everyone else. Every new mattress is backed by our 365-night sleep trial, price-match guarantee and free delivery across Canada. • The latest mattresses added to our lineup — refreshed as new models launch • Newest collections now: Beautyrest Centennial Hybrid & Serta iComfort Zip • Latest comfort tech and constructions across plush, medium and firm • Available in every size, from twin XL to king (including split sizes) • Premium and everyday models as they arrive • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery

If you sleep hot, the right mattress can make all the difference. Our cooling mattresses are built to draw heat away from your body and keep you comfortable all night — using cooling technologies like gel-infused memory foam, cool-to-the-touch and phase-change covers, graphite and copper infusions, and breathable pocket-coil airflow. You'll find cooling builds across every brand — Sealy, Serta, Beautyrest, iComfort, Tempur-Pedic, Chirofoam and our own NM line — in foam, hybrid and pocket-coil, from plush to firm. If you wake up sweaty or run warm at night, start here. Every mattress includes a 365-night sleep trial, price-match guarantee and free delivery across Canada. • Best for: hot sleepers, night sweats, or anyone who runs warm • Cooling technologies: gel-infused memory foam, cool-to-the-touch & phase-change covers, graphite/copper infusions, breathable coil airflow • Builds: gel memory foam, hybrid and pocket-coil • Across every brand and firmness, plush to firm • Why it helps: draws heat away and improves airflow so you sleep cooler • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery

King Split Head Medium Mattresses New Arrivals Cooling Mattresses Compatible with Adjustable Bed Brands