Medium MLILY® PowerCool Low Motion Transfer Mattresses Temperature-Regulating Mattresses Adjustable Bed Base Friendly Default Category
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
The MLILY® PowerCool collection brings together an individually pocketed coil system and a foam encasement, engineered to keep you supported and sleeping cool. Offered in medium and firm feels on an 11.5 inch profile, PowerCool is made in the USA and backed by a 10-year warranty plus free next-day delivery in Toronto.
If your partner tosses, turns or gets up during the night, a low-motion-transfer mattress keeps their movement from becoming your problem. These mattresses use individually wrapped pocket coils and motion-absorbing memory foam to isolate movement to one side of the bed — so when one of you shifts, the other barely feels it. It's one of the most important features for couples, and for anyone who shares a bed with a restless sleeper, a pet, or a partner on a different schedule. You'll find low-motion-transfer builds across every brand — Sealy, Serta, Beautyrest, Simmons, iComfort, Tempur-Pedic, Chirofoam and our own NM line — in pocket-coil, hybrid and memory foam, every firmness from plush to firm. Every mattress includes a 365-night sleep trial and free delivery across Canada. • What it means: movement stays on one side — your partner's tossing won't wake you • How it works: individually wrapped pocket coils and motion-absorbing memory foam (vs connected innersprings that transfer motion) • Best for: couples, light sleepers, and anyone sharing a bed with a restless partner or pet • Builds: pocket-coil, hybrid and memory foam • 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
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.
The MLILY® PowerCool collection brings together an individually pocketed coil system and a foam encasement, engineered to keep you supported and sleeping cool. Offered in medium and firm feels on an 11.5 inch profile, PowerCool is made in the USA and backed by a 10-year warranty plus free next-day delivery in Toronto.
If your partner tosses, turns or gets up during the night, a low-motion-transfer mattress keeps their movement from becoming your problem. These mattresses use individually wrapped pocket coils and motion-absorbing memory foam to isolate movement to one side of the bed — so when one of you shifts, the other barely feels it. It's one of the most important features for couples, and for anyone who shares a bed with a restless sleeper, a pet, or a partner on a different schedule. You'll find low-motion-transfer builds across every brand — Sealy, Serta, Beautyrest, Simmons, iComfort, Tempur-Pedic, Chirofoam and our own NM line — in pocket-coil, hybrid and memory foam, every firmness from plush to firm. Every mattress includes a 365-night sleep trial and free delivery across Canada. • What it means: movement stays on one side — your partner's tossing won't wake you • How it works: individually wrapped pocket coils and motion-absorbing memory foam (vs connected innersprings that transfer motion) • Best for: couples, light sleepers, and anyone sharing a bed with a restless partner or pet • Builds: pocket-coil, hybrid and memory foam • 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
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.
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- MLILY® PowerCool 11.5" Medium Hybrid Mattress
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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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