Extra Firm Medium Mattresses Plush Mattresses Temperature‑Regulating Mattresses | Year‑Round Comfort & Balance Serta Mattresses

Extra firm mattresses are the firmest, most supportive feel we carry — a hard, no-sink surface that holds your body on top of the mattress rather than letting it settle in. They're built for stomach sleepers, heavier-weight sleepers and anyone who finds a standard firm mattress still too soft, delivering maximum support and spinal alignment. Most use a tight-top or high-density foam construction (including orthopedic Chirofoam), with budget-friendly options that keep extra-firm support affordable. Shop Beautyrest, Serta, Chirofoam, Springwall and our own NM line — from $152, with free delivery across Canada. • Feel: extra firm is the firmest of our four comfort levels — a hard, no-sink surface • Best for: stomach sleepers, heavier-weight sleepers, and anyone who wants maximum support • Choose this over firm if a standard firm mattress still feels too soft • Consider firm or medium if you sleep on your side or want any cushioning • Constructions: tight-top and high-density foam (including orthopedic Chirofoam) • Brands: Beautyrest, Serta, Chirofoam, Springwall & NM • Prices: from $152 — an affordable, value-focused selection
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
Plush mattresses are the softest comfort level we carry — built with thick pillow-top and euro-top comfort layers (plus plush memory foam and hybrid options) that cradle your shoulders and hips for a soft, sink-in feel. Plush is the top choice for side sleepers and lighter-weight sleepers who need extra cushioning at the pressure points; back and stomach sleepers, or anyone who wants firmer support, may prefer our medium or firm options. Shop plush models from Sealy, Serta, Beautyrest, Stearns & Foster, iComfort and Tempur-Pedic in memory foam, hybrid and pocket-coil builds — with free delivery across Canada. • Feel: plush is the softest of our four comfort levels (plush, medium, firm, extra firm) • Best for: side sleepers and lighter-weight sleepers — cushions shoulders and hips • Consider firmer if: you sleep on your back or stomach, are heavier, or want more support • Plush constructions: pillow-top, euro-top, plush memory foam and hybrid • Builds: memory foam, hybrid and pocket-coil • Brands: Sealy, Serta, Beautyrest, Stearns & Foster, iComfort & Tempur-Pedic • Prices: from $224 to premium
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.

Serta is a globally recognized mattress brand celebrated for its comfort-first designs and sleep innovations. With over 90 years of experience, Serta continues to deliver quality mattresses that Canadians can trust.

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.

Extra Firm Medium Mattresses Plush Mattresses Temperature‑Regulating Mattresses | Year‑Round Comfort & Balance Serta
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    • 8 Inch Model with Double Layers of Comfort
    • Serta CoolWick Breathable Cover
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    Single/Twin $431
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  • SERTA® Modern Series™ 10" Extra-Firm Gel Foam Mattress SERTA® Modern Series™ 10" Extra-Firm Gel Foam Mattress brand icon
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    • Serta CoolWick Breathable Cover
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    • Designed and Built in Canada
    Single/Twin In stock for fast delivery $537
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  • SERTA® Modern Series™ 10" Medium Firm Gel Foam Mattress SERTA® Modern Series™ 10" Medium Firm Gel Foam Mattress brand icon
    • 10 Inch Model with Double Layers of Comfort
    • Serta CoolWick Breathable Cover
    • PureComfort Gel Foam with PureComfort Foam Support Core
    • Designed and Built in Canada
    Single/Twin $537
    Twin XL In stock for fast delivery $553
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  • SERTA® Classic® 11" Plush Euro Top Mattress SERTA® Classic® 11" Plush Euro Top Mattress brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support
    • Serta® PillowSoft® Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    Single/Twin In stock for fast delivery $544
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  • SERTA® Classic® 11.5" Extra-Firm Tight Top Mattress SERTA® Classic® 11.5" Extra-Firm Tight Top Mattress brand icon
    • 800 Edition Custom Support Coil System
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    • Cool Twist® Gel Memory Foam + Serta® Support Gel Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
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  • SERTA® Classic® 12.5" Medium Euro Top Mattress SERTA® Classic® 12.5" Medium Euro Top Mattress brand icon
    • 800 Edition Custom Support Coil System
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    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
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    Single/Twin $657
    Twin XL In stock for fast delivery $703
    Double/Full $713
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  • SERTA® Classic® 12.5" Luxury Plush Euro Top Mattress SERTA® Classic® 12.5" Luxury Plush Euro Top Mattress brand icon
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support 
    • Cool Twist® Gel Memory Foam + Serta® PillowSoft® Gel Foam
    • Serta® Anti-Microbial Fibre Technology
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    • Designed and Made in Canada
    Single/Twin In stock for fast delivery $657
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    Double/Full $713
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  • SERTA® Perfect Sleeper® 11" Plush Pillow Top Mattress SERTA® Perfect Sleeper® 11" Plush Pillow Top Mattress brand icon
    • 825 Edition Custom Support Coil System
    • CoolFeel Fabric™
    • Gel Band Support
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    • Designed and Made in Canada
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    • 850 Edition Custom Support Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
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  • SERTA® Perfect Sleeper® Premium 14" Extra-Firm Tight Top Mattress SERTA® Perfect Sleeper® Premium 14" Extra-Firm Tight Top Mattress brand icon
    • 1000 Series 3-Zoned Coil System
    • CoolFeel Fabric™
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    • 1000 Series 3-Zoned Coil System
    • CoolFeel Fabric™
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    • 1000 Series 3-Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
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