Firm Medium Compatible with Adjustable Bed Adjustable Bed Compatible Mattresses 15 Inches Mattress Selector

Firm mattresses give you the most support of our everyday comfort levels — a solid, stable surface that keeps your spine aligned instead of sinking in. Firm is the go-to for back and stomach sleepers, heavier-weight sleepers who need extra support, and anyone looking for orthopedic, back-friendly comfort; side sleepers or those who like a softer feel may prefer our medium or plush options. Choose from tight-top, foam, euro-top and hybrid builds across Sealy, Serta, Beautyrest, Stearns & Foster, iComfort, Tempur-Pedic, Chirofoam and our own NM line — from budget-friendly models at $59 to premium, with free delivery across Canada. • Feel: firm gives a solid, supportive surface with minimal sink-in • Best for: back and stomach sleepers, heavier-weight sleepers, and orthopedic / back-pain support • Consider softer if you sleep on your side or want more cushioning — see our medium or plush options • Constructions: tight-top (most firm beds), foam, euro-top and hybrid • Brands: Sealy, Serta, Beautyrest, Stearns & Foster, iComfort, Tempur-Pedic, Chirofoam, Springwall & NM • Prices: from $59 (budget) to premium — our widest price range • Want the firmest feel? See our extra-firm 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
Not every mattress can bend with an adjustable base — but these can. Every mattress here is built to flex with the head and foot articulation of an adjustable base without damaging the comfort layers, so you can read, relax in Zero-Gravity or elevate your legs with confidence. In fact, over 90% of our mattresses are adjustable-compatible, spanning memory foam, hybrid and pocket-coil constructions from every brand — NM, Sealy, Serta, Beautyrest, Tempur-Pedic, Stearns & Foster and more — at every budget from about $109 to premium. Foam and hybrid models flex most easily, while rigid, thick tight-top innersprings generally don't. Pair any of these with one of our adjustable bases, and every mattress comes with a 365-night sleep trial and free delivery across Canada. • What this means: mattresses built to flex with an adjustable base's head & foot articulation • Over 90% of our mattresses are adjustable-compatible — every brand, every budget ($109+) • Best constructions for adjustable bases: memory foam, hybrid and pocket-coil • What usually won't work: rigid, thick tight-top innersprings that don't bend • Pairs with our adjustable bases (including split-king for independent sides) • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery
Firm Medium Compatible with Adjustable Bed Adjustable Bed Compatible Mattresses 15 Inches Mattress Selector

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  • BEAUTYREST® 15" Pillow Top Firm Mattress
    LIMITED STOCK
    Beautyrest 15-inch firm pillow-top mattress, tall profile, grey quilted top with teal swirls, charcoal sides Beautyrest Mattress Collection Logo
    FIRM
    • 875 Beautyrest® Pocketed Coil Technology
    • Beautyrest® ActiveResponse Memory Foam
    • SurfaceTouch™ Gel Memory Foam
    • Beautyrest® Medium+Firm Gel Foam
    • InfiniCool™ Technology
    • Beautyrest® Antimicrobial Fibre Technology
    Single/Twin $917
    Twin XL In stock for fast delivery $974
    Double/Full $989
    Queen In stock for fast delivery $1,034
    Compare at $2,499
    King $1,199
    Online availability icon In-Stock Only 6 left!
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    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Aug 8
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  • SERTA® Perfect Sleeper® Premium 15" Firm Pillow Top Mattress
    CLEARANCE FLASH SALE BEST IN CLASS
    Serta Perfect Sleeper Premium 15-inch firm pillow-top, deep-blue burst quilting, charcoal sides Serta Perfect Sleeper Premium Mattress Logo
    FIRM
    • 1000 Series 3-Zoned Coil System
    • CoolFeel Fabric™
    • Serta® Antimicrobial Fibre
    • Cool Twist® Gel Memory Foam
    • Serta® Support Foam
    • Designed and Made in Canada
    Single/Twin In stock for fast delivery $484
    Twin XL In stock for fast delivery $506
    Double/Full SOLD OUT
    Queen SOLD OUT
    Compare at $2,299
    King SOLD OUT
    Online availability icon In-Stock Only 7 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Aug 8
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  • BEAUTYREST® Quintessence™ 15" Luxury FIrm Pillow Top Mattress
    CLEARANCE FLASH SALE BEST IN CLASS
    Beautyrest Quintessence 15-inch luxury firm pillow-top mattress, cream floral cover, charcoal woven side Beautyrest Quintessence Mattress Collection Logo
    FIRM
    • Beautyrest® T3 Pocketed Coil Technology
    • WinterCool™ Tri-Fiber with alpaca, cashmere, and silk.
    • WinterCool™ Sleep System with 4 distinct cooling technologies.
    • WinterCool™ Carbon Foam and GelTouch® Foam
    Twin XL In stock for fast delivery $880
    Queen SOLD OUT
    Compare at $3,299
    King SOLD OUT
    Online availability icon In-Stock Only 7 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Aug 8
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  • SERTA® Perfect Comfort X™ 15" Luxury Firm Super Pillow Top Mattress
    LIMITED STOCK
    Serta Perfect Comfort X 15-inch luxury firm super pillow-top mattress, navy cover, black-white feather quilt Serta Perfect Comfort X Luxury Mattress Logo
    FIRM
    • 2550 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • Cool Twist® Gel Memory Foam
    • Perfect Conform™ Micro Coils
    • CoolFeel Fabric™ w/ QuiltLoft™ Memory Foam
    • Designed and Made in Canada
    Twin XL In stock for fast delivery $1,523
    Double/Full In stock for fast delivery $1,618
    Queen In stock for fast delivery $1,715
    Compare at $4,099
    King $1,998
    Online availability icon In-Stock Only 8 left!
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Aug 8
    Pickup available icon Only Pickup available to
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  • STEARNS & FOSTER® Estate® 15" Medium Firm Pillow Top Mattress
    BEST IN CLASS EXCLUSIVE OFFER LIMITED STOCK
    Stearns & Foster Estate 15-inch medium-firm pillow-top mattress, stacked blue top, navy herringbone sides Stearns & Foster Luxury Mattress Logo
    MEDIUM
    • 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 In stock for fast delivery $2,099
    Compare at $3,099
    King $2,699
    Online availability icon In-Stock
    In-Store availability icon On Display:
    Free delivery availability icon Free delivery to M5H 2N1 as soon as Tomorrow, Aug 8
    Pickup available icon Only Pickup available to
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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.
  • 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.
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