Twin Size Medium Serta® Springwall® Evergreen® Sleep Breathable Mattresses Temperature-Regulating Mattresses Compatible with Adjustable Bed Mattress Selector

Twin Size mattresses measure 39" × 75" — the most compact standard adult size. They're ideal for children's rooms, bunk beds, daybeds, single sleepers, and guest or small bedrooms where space is tight. Compare every single/twin option below by brand, feel, and price.
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
Serta mattresses balance comfort and support with cooling-gel foams and proven coil systems, from a name trusted in Canadian bedrooms for decades. Compare every option below by feel, size, and price.
Springwall is a proudly Canadian-made brand known for chiropractic-minded support and durable, value-driven construction. Compare every option below by feel, size, and price.
Evergreen mattresses focus on natural, eco-conscious materials and breathable comfort for a cleaner, cooler sleep. Compare every option below by feel, size, and price.
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
A temperature-regulating mattress works to keep you at a comfortable, balanced temperature all night and all year — not just cooling you down, but adapting as your body and the seasons change so you don't wake up too hot or too cold. These mattresses use heat-responsive and breathable materials — phase-change covers, gel and graphite foams, Tencel and natural fibres, and airflow-promoting coils — to absorb and release warmth as needed. It's ideal if you run hot and cold, share a bed with a partner who sleeps at a different temperature, or just want consistent comfort through every season. You'll find temperature-regulating builds across every brand — Sealy, Serta, Beautyrest, iComfort, Tempur-Pedic, Chirofoam and our own NM line. Sleep hot specifically? See our cooling mattresses. Every mattress includes a 365-night sleep trial and free delivery across Canada. • What it does: holds a balanced, neutral temperature — adapts so you're not too hot or too cold • How it works: phase-change covers, gel & graphite foams, Tencel/natural fibres and breathable coil airflow • Best for: people who run hot and cold, couples with different sleep temperatures, and year-round comfort • Cooling vs regulating: cooling sleeps cold (for hot sleepers); regulating holds a steady, balanced temp • Across every brand and firmness • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery
Twin Size Medium Serta® Springwall® Evergreen® Sleep Breathable Mattresses Temperature-Regulating Mattresses Compatible with Adjustable Bed Mattress Selector

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Clear all Single/Twin Medium Serta Springwall Evergreen Breathable Temperature Regulating Compatible with Adjustable Bed

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Single/Twin Medium Serta Springwall Evergreen Breathable Temperature Regulating Compatible with Adjustable Bed Clear all
  • SPRINGWALL® 6" Medium Firm Tight Top Foam Mattress
    BEST IN CLASS TOP RATED TRENDING
    Springwall 6-inch medium-firm tight-top foam mattress with patterned white quilted cover and charcoal sides Springwall Foam Mattress Collection Logo
    MEDIUM
    • Bio Comfort Foam Core
    • Gel Quilt Foam
    • Stretch Knit
    • Reduced Motion Transfer
    • Made In Canada
    Single/Twin In stock for fast delivery $171
    Compare at $399
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  • SPRINGWALL® 7" Medium Firm Tight Top Foam Mattress
    BEST IN CLASS TRENDING LIMITED STOCK
    Springwall 7-inch medium-firm tight-top foam mattress, white cover with grey cloud motifs and charcoal quilted sides Springwall Foam Mattress Collection Logo
    MEDIUM
    • Bio Comfort Foam Core
    • Gel Quilt Foam
    • Convoluted Bio Comfort Foam
    • Reduced Motion Transfer
    • Made In Canada
    Single/Twin In stock for fast delivery $206
    Compare at $499
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  • SPRINGWALL® Chiro Medic® 8.5" Medium Firm Eurotop Mattress
    FLASH SALE BEST IN CLASS TOP RATED
    Springwall Chiro Medic 8.5-inch medium-firm euro-top mattress, white quilted top, dark sides, silver piping Springwall Chiromedic Mattress Logo
    MEDIUM
    • 700 Continuous Coil
    • Bio-Foam Comfort Foam with Gel
    • Bio Comfort Quilted Stretch knit surface
    • SpringWALL Edge System
    • Pressure Balancing Design
    Single/Twin $206
    Compare at $499
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    Estimated delivery icon Estimated free delivery to M5H 2N1 on Tue, Aug 18
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  • SPRINGWALL® Comfort Pockets® 12" Medium Firm Euro-Top Mattress
    BEST IN CLASS BEST SELLING TOP RATED
    Springwall Comfort Pockets 12-inch medium-firm euro-top mattress, white pebble-motif cover with grey woven sides Springwall Comfort Pockets Mattress Logo
    MEDIUM
    • 884 Full Perimeter Comfort Pockets® (Pocket Coils)
    • Bio Foam with Gel
    • HD Medium Bio Comfort Foam
    • Bio Comfort Quilted Stretch knit surface
    • Made In Canada
    Single/Twin In stock for fast delivery $323
    Compare at $799
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  • SERTA® Modern Series™ 8" Medium Firm Gel Foam Mattress
    BEST IN CLASS TOP RATED LIMITED STOCK
    Serta Modern Series 8-inch medium-firm gel foam mattress, low-profile white geometric cover, navy base Serta Modern Series Memory Foam Mattress Logo
    MEDIUM
    • 8 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 $431
    Compare at $1,099
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  • SERTA® Modern Series™ 10" Medium Firm Gel Foam Mattress
    TOP RATED LIMITED STOCK
    Serta Modern Series 10-inch medium-firm gel foam mattress, white geometric cover on navy fabric base Serta Modern Series Memory Foam Mattress Logo
    MEDIUM
    • 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
    Compare at $1,299
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  • SERTA® Classic® 12.5" Medium Euro Top Mattress
    BEST IN CLASS TOP RATED LIMITED STOCK
    Serta Classic 12.5-inch medium euro-top mattress, blue-white ombre plush top, navy floral sides Serta Classic Mattress Logo
    MEDIUM
    • 800 Edition Custom Support Coil System
    • 3 Zone Body Support + Serta® Support Gel Foam
    • Cool Twist® Gel Memory Foam + Serta® PillowSoft® Foam
    • Serta® Anti-Microbial Fibre Technology
    • Serta® Best Edge® Foam Encasement
    • Designed and Made in Canada
    Single/Twin $657
    Compare at $1,599
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    Estimated delivery icon Estimated free delivery to M5H 2N1 on Tue, Aug 18
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  • EVERGREEN 100% Certified Organic 10" Medium Firm Latex Mattress
    BEST IN CLASS LIMITED STOCK
    Evergreen 100% organic 10-inch medium-firm latex mattress, white diamond-quilted top, brown base trim Evergreen Sleep Pure 100% Organic Latex Mattress Collection Logo
    MEDIUM
    • 100% Certified Natural Organic Latex
    • Global Organic Latex Standard – Certified 100% Natural
    • Eco-Institute – No Fillers or Hazardous Particles
    • Oeko-Tex Standard 100 – No Harmful Substances
    • ABC Research Laboratories – Certified Antimicrobial
    Single/Twin In stock for fast delivery $1,384
    Compare at $2,599
    Online availability icon In-Stock Only 2 left!
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    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Aug 3
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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.
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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.
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