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
Sealy mattresses are engineered for dependable, body-aligning support — many featuring Posturepedic Technology that reinforces the centre third where you need it most. Compare every option below by feel, size, and price.
Sealy® Posturepedic® Plus elevates the trusted Posturepedic support with enhanced features and luxury materials. Enjoy deeper pressure relief, sturdier coils, and cooling upgrades in this collection – perfect for Canadians seeking an upgraded sleep experience.
Sealy® Essentials mattresses provide reliable comfort and support at a budget-friendly price. This collection offers the perfect balance of innerspring support and cooling foam comfort, delivering Sealy quality to Canadians at great value.
Medium Sealy® Sealy® Posturepedic® Plus – Enhanced Support & Cooling Comfort Sealy® Essentials Mattresses – Quality Comfort at Great Value Brands
Loading recommendations...

All Brands

Our entire selection of name brands.

Aireloom logo Aireloom (2) Beautyrest logo Beautyrest (55) Chirofoam logo Chirofoam (8) Evergreen logo Evergreen (8) HealthGuard logo HealthGuard (17) Leggett & Platt logo Leggett & Platt (6) Marshall logo Marshall (9) Mlily logo Mlily (22) Natura logo Natura (10) NM logo NM (70) Sealy logo Sealy (34) Serta logo Serta (54) Serta iComfort logo Serta iComfort (21) Sinca logo Sinca (3) Springwall logo Springwall (34) Stearns & Foster logo Stearns & Foster (18) Tempur-pedic logo Tempur-pedic (17)

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.
Clearance Mattresses

Clearance Mattresses

Explore our discounted mattress collection, featuring limited quantities, floor models, and more.

Shop All Clearance

Mattress Selector

See which mattress is best for you!

Try Now

Thousands in Stock

We have over 1,000 mattresses in stock.

Shop Now
Loading recommendations...