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Medium Adjustable Bed Base Friendly Temperature-Regulating Mattresses Compatible with Adjustable Bed Cooling Mattresses All

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
Shop adjustable base friendly mattresses from Beautyrest, Serta, Sealy, Tempur-Pedic, Springwall, iComfort, and Stearns & Foster at National Mattress — 169+ models in memory foam, hybrid, latex, eurotop, and tight-top constructions from $59 to $6,640. Every mattress in this collection is manufacturer-verified to flex and articulate with an adjustable base without voiding the warranty. Available in Twin through King sizes with firmness levels from extra firm to plush, all built with CertiPUR-US® certified foams, including Canadian-made options. Free delivery is available, along with a 365-night sleep trial and 5–15 year warranty coverage.
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
If you sleep hot, the right mattress can make all the difference. Our cooling mattresses are built to draw heat away from your body and keep you comfortable all night — using cooling technologies like gel-infused memory foam, cool-to-the-touch and phase-change covers, graphite and copper infusions, and breathable pocket-coil airflow. You'll find cooling builds across every brand — Sealy, Serta, Beautyrest, iComfort, Tempur-Pedic, Chirofoam and our own NM line — in foam, hybrid and pocket-coil, from plush to firm. If you wake up sweaty or run warm at night, start here. Every mattress includes a 365-night sleep trial, price-match guarantee and free delivery across Canada. • Best for: hot sleepers, night sweats, or anyone who runs warm • Cooling technologies: gel-infused memory foam, cool-to-the-touch & phase-change covers, graphite/copper infusions, breathable coil airflow • Builds: gel memory foam, hybrid and pocket-coil • Across every brand and firmness, plush to firm • Why it helps: draws heat away and improves airflow so you sleep cooler • Every order: 365-night sleep trial, price-match guarantee & free Canada-wide delivery
Medium Adjustable Bed Base Friendly Temperature-Regulating Mattresses Compatible with Adjustable Bed Cooling Mattresses All
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  • 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
    • 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 $1,121
    Twin XL $1,877
    Double/Full $1,906
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    King In stock for fast delivery $2,650
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  • Sealy Essentials 10.5-inch medium-firm euro-top foam mattress, blue-speckled top, white sides on black base Sealy Essentials Mattress Logo
    • CleanProtect™ Fabric
    • SealyLoft™ Quilt with Moisture Wicking Fibres
    • CertiPUR-US™ SealySupport™ HD Foam
    • CertiPUR-US™ SealySupport™ HD Core
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    Single/Twin $432
    Twin XL $478
    Double/Full $486
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  • Evergreen 12-inch medium-firm organic latex foam mattress, white button-tufted top, ribbed sides, sage trim Evergreen Sleep Organic Latex Mattress Collection Logo
    • Open Cell Bio Foam Core
    • 4" Organic Latex Comfort Layer
    • 1" Organic Latex Support Panel
    • Organic Cotton Quilt
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin In stock for fast delivery $1,011
    Twin XL In stock for fast delivery $1,027
    Double/Full In stock for fast delivery $1,043
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    King In stock for fast delivery $1,575
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  • Sealy Posturepedic Plus 1200 Series 15.5-inch medium-firm euro-pillow-top mattress, domed cream top, blue sides Sealy Posturepedic Plus Mattress Logo
    • 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 $873
    Twin XL $926
    Double/Full $988
    Queen $1,049
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    King $1,279
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  • Serta Classic 12.5-inch medium euro-top mattress, blue-white ombre plush top, navy floral sides Serta Classic Mattress Logo
    • 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
    Twin XL $703
    Double/Full $713
    Queen $754
    Compare at $1,799
    King $922
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  • Stearns & Foster Lux Estate 16-inch medium-firm euro-top mattress, teal damask top, navy sides, coral tabs Stearns & Foster Lux Estate Luxury Mattress Logo
    • Indulge Quilt With Silk & Wool Fibres
    • Cooling Fibres With Tencel™
    • PrecisionMatch™ Memory Foam
    • Supportive Latex Comfort Layer
    • PrimaSense™ Gel Infused Comfort Layers
    • Intellicoil® Innerspring (Pocket Coil) With Intellicoil® Micro HD
    • Handmade By Certified Master Craftsman
    Twin XL $2,549
    Double/Full $2,649
    Queen $2,749
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    King $3,349
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  • Beautyrest 14-inch medium-firm pillow-top mattress, grey textured cover with charcoal sides, teal piping and side handles Beautyrest Mattress Collection Logo
    • 875 Beautyrest® Pocketed Coil Technology
    • Beautyrest® ActiveResponse Memory Foam
    • Beautyrest® Plush Gel Foam
    • Beautyrest® Support Foam
    • Beautyrest® Antimicrobial Fibre Technology
    Single/Twin $769
    Twin XL In stock for fast delivery $817
    Double/Full $830
    Queen $879
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    King In stock for fast delivery $1,034
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  • Serta Perfect Comfort X 14-inch medium firm euro-top mattress, charcoal cover, grey feather quilt top Serta Perfect Comfort X Luxury Mattress Logo
    • 1250 Series 5 ZoneActive™ Pocket Coil System
    • Perfect Conform™ Graphite Memory Foam
    • CoolFeel Fabric™
    • QuiltLoft™ Memory Foam
    • PerfectPure™ Fibre
    • Designed and Made in Canada
    Twin XL In stock for fast delivery $1,149
    Double/Full $1,239
    Queen $1,323
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  • Tempur-Pedic Tempur-Align 2.0 10-inch medium firm memory foam mattress, white wave-knit top on navy base Tempurpedic Luxury Memory Foam Mattress Logo
    • Premium Fabric Cover
    • TEMPUR® Material
    • New generation 2.0 enhancements
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    Single/Twin $1,649
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  • Sealy Essentials 8-inch medium-firm tight-top foam mattress, quilted blue-grey top, white sides, navy piping Sealy Essentials Mattress Logo
    • CleanProtect™ Fabric
    • SealyLoft™ Quilt with Moisture Wicking Fibres
    • CertiPUR-US™ SealySupport™ HD Foam
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    Twin XL $382
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  • Beautyrest Centennial 15.5-inch pillow top medium-firm mattress, black sparkled pillow top with grey sides Beautyrest Centennial Luxury Mattress Logo
    • 1850 T3 Triple Stranded Pocketed Coil® and Micro Coil Technology
    • SurfaceTouch™ Gel Memory Foam
    • Self-Response™ Latex
    • Beautyrest® Gel Memory Foam
    • Beautyrest® Gel Support Foam
    • Sleep Climate™ Surface enhanced with cooling yarn
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  • National Mattress 12-inch medium-firm memory-foam mattress, tall white channel-quilted top, grey woven sides NM Cozy Collection Logo
    • Optimal High Resilient Bio-Foam Core
    • Gel Infused Visco Memory Foam
    • Cotton Channel Quilted Cover
    • 10 Year Warranty
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