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Medium Foam Core/No Coils NM® Mattresses and Accessories

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
Foam core mattresses are built entirely from foam with no innerspring coils, for quiet, motion-free sleep and a consistent, supportive surface. They're lightweight, pair perfectly with platform and adjustable bases, and suit couples sensitive to movement. Compare every all-foam, no-coil option below by brand and feel.

NM Mattresses is our in-house brand, offering high-quality, budget-friendly beds tailored for Canadian sleepers — durable components and honest value without compromising comfort or support.

Shop NM across the NM®, Essentials, Cozy, Hi-Loft™, HD+™ Core, Orthopedic and Hospitality lines, in single/twin through king. Built in Canada and the USA with 5- to 25-year manufacturer warranties depending on the line, every NM mattress comes with our 365-night sleep trial and price-match guarantee.

Medium Foam Core/No Coils NM
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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 $1,384
    Twin XL In stock for fast delivery $1,877
    Double/Full In stock for fast delivery $1,906
    Queen In stock for fast delivery $1,935
    Compare at $3,599
    King In stock for fast delivery $2,650
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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 $1,043
    Queen In stock for fast delivery $1,167
    Compare at $2,099
    King In stock for fast delivery $1,575
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  • SERTA® iComfort® 13" Medium Firm Memory Foam Mattress
    FLASH SALE EXCLUSIVE OFFER LIMITED STOCK
    Serta iComfort 13-inch medium firm memory foam mattress, light blue swirl-quilt top, charcoal sides Serta iComfort Logo
    • CoolFeel™ Fabric
    • 5 ZoneResponse™ Design
    • Perfect Conform™ Graphite Memory Foam
    • Deep Reaction® Max Gel Memory Foam + iComfort® Gel Memory Foam
    • CertiPUR-US® certified foams.
    • 100% Canada Assembled
    Twin XL In stock for fast delivery $1,799
    Double/Full SOLD OUT
    Queen In stock for fast delivery $1,999
    Compare at $3,099
    King $2,499
    Online availability icon In-Stock Only 8 left!
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  • NM Cozy 12" Medium Firm Memory Foam Mattress
    BEST IN CLASS TOP RATED TRENDING
    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
    • Made In Toronto, Canada
    Single/Twin $571
    Twin XL In stock for fast delivery $629
    Double/Full In stock for fast delivery $639
    Queen In stock for fast delivery $694
    Compare at $1,299
    King In stock for fast delivery $967
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  • NM® Essential 10" Memory Foam Mattress - 1 NM® Essentials collection logo
    • 3″ Gel AeroFusion® Memory Foam
    • Standard Comfort Knit Cover
    • Flex Support Foam Core
    • 10 Year Warranty
    Single/Twin $496
    Twin XL In stock for fast delivery $536
    Double/Full $677
    Queen In stock for fast delivery $797
    Compare at $1,699
    King $961
    Online availability icon In-Stock Only 8 left!
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  • NM Cozy 8" Medium Firm Memory Foam Mattress
    CLEARANCE FLASH SALE BEST IN CLASS
    National Mattress 8-inch medium-firm memory-foam mattress, smooth white tight-top, charcoal sides, NM badge NM Cozy Collection Logo
    • High Density Foam Core
    • Cool Gel Memory Foam
    • Hypoallergenic Bamboo Cover
    • 10 Year Warranty
    • Made In Toronto, Canada
    Single/Twin In stock for fast delivery $260
    Twin XL In stock for fast delivery $359
    Double/Full In stock for fast delivery $359
    Queen In stock for fast delivery $428
    Compare at $899
    King In stock for fast delivery $576
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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
    • SealySupport™ HD Foam
    Single/Twin In stock for fast delivery $432
    Twin XL In stock for fast delivery $478
    Double/Full $486
    Queen In stock for fast delivery $505
    Compare at $1,199
    King $655
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  • Sealy Cocoon 8-inch medium-firm memory foam mattress, white swirl-pattern top, black sides, Cocoon logo Sealy Cocoon Memory Foam Mattress Logo
    • Premium Fabric Cover
    • Perfect Fit Memory Foam
    • Personalized Comfort Layer
    • Essential Support Foam
    • 10 Year Warranty
    Single/Twin In stock for fast delivery $505
    Twin XL In stock for fast delivery $553
    Double/Full $610
    Queen In stock for fast delivery $711
    Compare at $1,699
    King In stock for fast delivery $1,025
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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
    • CertiPUR-US™ SealySupport™ HD Core
    • SealySupport™ HD Foam
    Single/Twin $298
    Twin XL In stock for fast delivery $382
    Double/Full In stock for fast delivery $388
    Queen In stock for fast delivery $420
    Compare at $999
    King $591
    Online availability icon In-Stock Only 8 left!
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  • Serta Modern Series 8-inch medium-firm gel foam mattress, low-profile white geometric cover, navy base Serta Modern Series Memory Foam Mattress Logo
    • 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
    Twin XL In stock for fast delivery $445
    Double/Full $488
    Queen $535
    Compare at $1,299
    King $653
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  • Serta Modern Series 10-inch medium-firm gel foam mattress, white geometric cover on navy fabric base Serta Modern Series Memory Foam Mattress Logo
    • 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
    Twin XL In stock for fast delivery $553
    Double/Full $597
    Queen In stock for fast delivery $645
    Compare at $1,599
    King $765
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  • Serta Spectrum 8-inch medium-firm gel memory foam mattress, grey knit cover, navy Spectrum side badge Serta Spectrum Memory Foam Mattress Logo
    • 8 Inch Model with Double Layers of Comfort
    • Serta® CoolWick™ Breathable Cover
    • CoolTwist™ Gel Foam with SertaPure® Foam Support Core
    • Designed and Built in Canada
    Queen SOLD OUT
    Compare at $1,499
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How to Choose Within the NM Line

The NM line is our own label, and it covers the whole bed: sprung and all-foam mattresses, box springs, a solid wood platform bedframe, headboards, pillows, sheets and a waterproof protector. Work from the sleep surface outward. The coil models are built on heat-tempered drawn spring steel in Bonnell, pocket coil, foam-encased pocket coil and individually pocketed configurations, and the difference is how they behave: pocketed coils compress one at a time and isolate movement, while a connected coil system shares load for a firmer, more uniform feel. The all-foam models use high-density polyurethane support foam with no springs at all, which removes bounce and noise. Within the line, NM Orthopedic Classic, PLUS and Supreme are the sprung builds, NM Cozy is memory foam, NM HD+ Core is high-density foam, and NM Hi-Loft Elite and NM Essential cover euro top and hybrid feels.

Then come the layers around the mattress. A box spring is not just a spacer, because its profile decides how high you sit: a standard box spring runs about 9 inches deep and a low profile one about 5, so stepping down gains you roughly four inches of clearance rather than half the height. A platform version is thinner again, and NM offers platform, low profile, standard and high profile options, with the depth listed on each. Aim for a finished bed where the top of the mattress lands near your knee as you stand beside it, and ask about split options if your staircase or hallway has a tight turn. Above the mattress, the waterproof protector is the piece most people skip and later regret. What wears a mattress out is mechanical, foam fatigue in the comfort layers and coil set underneath, so a protector is not the thing keeping the bed alive: it is there for hygiene, and for keeping the mattress in the condition a warranty claim depends on. NM pillows include charcoal, copper and lavender infused options alongside shredded memory foam, duck feather, microfiber and wool, so match loft to your sleeping position.

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Coils or All Foam

Pocketed springs isolate motion, connected coils feel firmer and more uniform, and all-foam cores remove bounce and noise entirely.

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Profile Sets Bed Height

Platform, low profile, standard and high profile change the finished height by inches. See how standard and low profile compare.

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Protect It From Day One

A waterproof protector keeps sweat and spills out of the foam, which matters for hygiene and for keeping the mattress in the condition a warranty claim depends on. Our protector guide explains what to look for in a cover.

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Frame and Headboards

The solid wood platform bedframe comes in a natural and a walnut finish, and the George and Layla headboards pair with it. See bedroom essentials.

Frequently Asked Questions About NM Mattresses and Bedding

What is the NM brand?
NM is the National Mattress house label. It spans mattresses in sprung, hybrid and all-foam builds, box springs in several profiles, a solid wood platform bedframe, headboards, pillows, sheets and a waterproof protector. Because it is one line, the sizes are designed to work together, so a mattress, a box spring and a frame from it fit each other without measuring twice.
What is the difference between the NM foam and NM coil mattresses?
The coil models put heat-tempered drawn spring steel under the comfort layers, which gives a springier, more supportive push-back and better airflow through the core. The all-foam models use high-density polyurethane support foam instead, so they run quieter, transfer less movement and contour more closely. Coils suit people who want a firm, responsive surface; foam suits those who want the bed to give way.
Which NM box spring profile should I choose?
Work backwards from the height you want to sit at. A standard box spring runs about 9 inches deep and a low profile one about 5, so stepping down gains you roughly four inches of clearance rather than half the height. A platform version is thinner again, which is the one to pick when the mattress is already tall. The depth is listed on each option, so check it against your mattress before ordering, and ask about split options if your staircase or hallway has a tight turn.
Does an NM foam mattress need a box spring?
Not necessarily. An all-foam mattress needs a flat, evenly supported surface, which a platform bedframe with closely spaced slats already provides. Aim for gaps of about three inches or less, with slats a couple of inches wide. What it must not sit on is a sagging old box spring, or slats spaced far apart, because the foam will bow into the gaps. If your frame has wide slats, a thin platform box spring or a bunkie board bridges them. See slats and box springs.
Is there an NM mattress for a crib?
Yes. The NM Lullaby mattresses are made for crib sizes and are dual sided, with a firmer infant side and a softer toddler side, so one mattress carries a child through both stages. Infant sleep guidance calls for a firm, flat surface with no gap between the mattress and the crib wall, so measure the crib interior before ordering.
Which NM pillow should I choose?
Match the loft to how you sleep. Stomach sleepers need a low, soft pillow so the neck is not pushed back, back sleepers want a medium loft that fills the hollow under the neck, and side sleepers need the most height and firmness to keep the head level with the spine. Our pillow guide compares the fills.

Building a Whole Bed, Not Just Choosing a Mattress?

Our non-commissioned sleep experts can size the frame, the box spring and the sheets to the mattress you pick, in one conversation.

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