Medium Mattresses Temperature‑Regulating Mattresses | Year‑Round Comfort & Balance Yes White Serta Mattresses

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
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.

Medium Mattresses Temperature‑Regulating Mattresses | Year‑Round Comfort & Balance Yes White Serta
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  • NM 8" Medium Firm Memory Foam Mattress
    BEST IN CLASS BEST SELLING TOP RATED
    NM 8" Medium Firm Memory Foam Mattress NM 8" Medium Firm Memory Foam Mattress brand icon
    • High Density Foam Core
    • Cool Gel Memory Foam
    • Hypoallergenic Bamboo Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin $289
    Double/Full In stock for fast delivery $399
    Twin XL In stock for fast delivery $399
    Queen In stock for fast delivery $428
    Compare at $899
    King In stock for fast delivery $640
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    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 11
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  • NM 10" Medium Firm Euro Top Mattress
    BEST IN CLASS BEST SELLING TOP RATED
    NM 10" Medium Firm Euro Top Mattress NM 10" Medium Firm Euro Top Mattress brand icon
    • 800 Hi-Loft Pocket Coil
    • Cool Gel infused memory foam
    • Luxurious Knit Fabric
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin In stock for fast delivery $318
    Double/Full In stock for fast delivery $325
    Queen In stock for fast delivery $347
    Compare at $699
    King In stock for fast delivery $535
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  • SEALY® Posturepedic Plus® 1200 Series 15.5" Medium Firm Europillowtop Mattress SEALY® Posturepedic Plus® 1200 Series 15.5" Medium Firm Europillowtop Mattress brand icon
    • CleanProtect™ Cover
    • Sealy AirSense™ Fibres Topped with SealyIce™ Yarn
    • CertiPUR-US™ SealyComfort™ Gel HD Foam
    • Posture Grid® Coil System featuring PostureSense™ Nano Coils
    • SolidEdge™ PRO
    • PROBACK® Plus Quilt with Targeted GelSense™ HD Memory Foam
    Single/Twin In stock for fast delivery $873
    Twin XL In stock for fast delivery $926
    Double/Full $988
    Queen $1,049
    Compare at $2,499
    King $1,279
    Online availability icon In-Stock Only 2 left!
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  • TEMPUR-PEDIC® Tempur-Align® 2.0 Teal 10" Medium Firm Memory Foam Mattress TEMPUR-PEDIC® Tempur-Align® 2.0 Teal 10" Medium Firm Memory Foam Mattress brand icon
    • Premium Fabric Cover
    • TEMPUR® Material
    • New generation 2.0 enhancements
    • Voted Product Of The Year
    Single/Twin $1,399
    Twin XL $1,599
    Double/Full $1,899
    Queen $1,999
    Compare at $3,299
    King $2,599
    Online availability icon Out Of Stock
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  • STEARNS & FOSTER® Estate® 15" Medium Firm Pillow Top Mattress STEARNS & FOSTER® Estate® 15" Medium Firm Pillow Top Mattress brand icon
    • Indulge Quilt With Silk & Wool Fibres
    • PrecisionMatch™ Memory Foam
    • PrimaSense™ Gel Infused Comfort Layers
    • Intellicoil® Innerspring (Pocket Coil)
    • Handmade By Certified Master Craftsman
    Twin XL In stock for fast delivery $1,899
    Double/Full In stock for fast delivery $1,999
    Queen $2,099
    Compare at $3,099
    King $2,699
    Online availability icon In-Stock Only 9 left!
    In-Store availability icon On Display:
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  • NM 8" Medium Firm Memory Foam Mattress - Single/Twin
    BEST IN CLASS BEST SELLING TOP RATED
    NM 8" Medium Firm Memory Foam Mattress - Single/Twin NM 8" Medium Firm Memory Foam Mattress - Single/Twin brand icon
    • High Density Foam Core
    • Cool Gel Memory Foam
    • Hypoallergenic Bamboo Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin $289
    Compare at $599
    Online availability icon Backorder Available
    In-Store availability icon On Display:
    Estimated delivery icon Estimated free delivery on Tuesday, Jun 30
  • NM 10" Medium Firm Euro Top Mattress - Single/Twin NM 10" Medium Firm Euro Top Mattress - Single/Twin brand icon
    • 800 Hi-Loft Pocket Coil
    • Cool Gel infused memory foam
    • Luxurious Knit Fabric
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin In stock for fast delivery $318
    Compare at $599
    Online availability icon In-Stock Only 6 left!
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    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 11
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  • NM 10" Medium Firm Euro Top Mattress - Double/Full
    BEST IN CLASS BEST SELLING TOP RATED
    NM 10" Medium Firm Euro Top Mattress - Double/Full NM 10" Medium Firm Euro Top Mattress - Double/Full brand icon
    • 800 Hi-Loft Pocket Coil
    • Cool Gel infused memory foam
    • Luxurious Knit Fabric
    • 10 Year Warranty
    • Made In Toronto, Canada
    Double/Full In stock for fast delivery $325
    Compare at $699
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 11
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  • NM 10" Medium Firm Euro Top Mattress - Queen
    BEST IN CLASS BEST SELLING TOP RATED
    NM 10" Medium Firm Euro Top Mattress - Queen NM 10" Medium Firm Euro Top Mattress - Queen brand icon
    • 800 Hi-Loft Pocket Coil
    • Cool Gel infused memory foam
    • Luxurious Knit Fabric
    • 10 Year Warranty
    • Made In Toronto, Canada
    Queen In stock for fast delivery $347
    Compare at $699
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery as soon as Tomorrow, Jun 11
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  • NM 8" Medium Firm Memory Foam Mattress - Double/Full
    BEST IN CLASS BEST SELLING TOP RATED
    NM 8" Medium Firm Memory Foam Mattress - Double/Full NM 8" Medium Firm Memory Foam Mattress - Double/Full brand icon
    • High Density Foam Core
    • Cool Gel Memory Foam
    • Hypoallergenic Bamboo Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Double/Full In stock for fast delivery $399
    Compare at $799
    Online availability icon In-Stock Only 4 left!
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  • NM 8" Medium Firm Memory Foam Mattress - Twin XL
    BEST IN CLASS BEST SELLING TOP RATED
    NM 8" Medium Firm Memory Foam Mattress - Twin XL NM 8" Medium Firm Memory Foam Mattress - Twin XL brand icon
    • High Density Foam Core
    • Cool Gel Memory Foam
    • Hypoallergenic Bamboo Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Twin XL In stock for fast delivery $399
    Compare at $799
    Online availability icon In-Stock Only 6 left!
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  • NM 8" Medium Firm Memory Foam Mattress - Queen
    BEST IN CLASS BEST SELLING TOP RATED
    NM 8" Medium Firm Memory Foam Mattress - Queen NM 8" Medium Firm Memory Foam Mattress - Queen brand icon
    • High Density Foam Core
    • Cool Gel Memory Foam
    • Hypoallergenic Bamboo Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Queen In stock for fast delivery $428
    Compare at $899
    Online availability icon In-Stock Only 8 left!
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