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NM 12″ Medium Firm Memory Foam Mattress - Single/Twin

Meet NM® Cozy Memory Foam—all‑foam mattresses that pair cooling, temperature‑regulating comfort with low motion transfer, pressure‑point relief, and reinforced edge support. Thoughtful touches include hypoallergenic care, eco‑friendly manufacturing, adjustable‑base compatibility, and mattress‑in‑a‑box convenience.

Top Features

Add To Compare

– Optimal High Resilient Bio-Foam Core

– Gel Infused Visco Memory Foam

– Cotton Channel Quilted Cover

– 10 Year Warranty

– Made In Toronto, Canada

Our Price:

$571.00

Retail Price $1,099.00

In stock

Mattress Size : Single/Twin

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Boxspring

Without Boxspring

Mix-Match Boxspring

Matching Boxspring

Options

Standard 7" + $105.00

Low Profile 4" + $105.00

Platform 2" + $105.00

Options

High Profile 8" + $115.00

Low Profile 4" + $115.00

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➜ A portion of every sale supports the Sleeping Children Around The World (SCAW) Foundation. Click here to learn more.

Our Guarantees

+ Full Manufacturer’s Warranty

+ 100 Night Sleep Trial

+ Price Match Guarantee

+ Made in Canada

➜ Not sure which mattress is best for you? Try our MATTRESS SELECTOR to help you decide!

➜ See our REVIEWS from verified customers!

NM 12″ Medium Firm Memory Foam Mattress - Single/Twin

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Memory Foam, Foam Core/No Coils, Single/Twin Size Mattress, NM Mattress Sale, Buy in Toronto, Mississauga, Markham or Online-1

Memory Foam, Foam Core/No Coils, Single/Twin Size Mattress, NM Mattress Sale, Buy in Toronto, Mississauga, Markham or Online-2

Memory Foam, Foam Core/No Coils, Single/Twin Size Mattress, NM Mattress Sale, Buy in Toronto, Mississauga, Markham or Online-3

Memory Foam, Foam Core/No Coils, Single/Twin Size Mattress, NM Mattress Sale, Buy in Toronto, Mississauga, Markham or Online-4

Memory Foam, Foam Core/No Coils, Single/Twin Size Mattress, NM Mattress Sale, Buy in Toronto, Mississauga, Markham or Online-5

Memory Foam, Foam Core/No Coils, Single/Twin Size Mattress, NM Mattress Sale, Buy in Toronto, Mississauga, Markham or Online-6

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Style	Memory Foam, Foam Core/No Coils
Firmness	Medium
Coil Count	N/A
Coil Type	N/A
Core Type	NM® HD+™ High Density Support Core
Core Density	1.8 lb/ft³
Height	12 Inches

Collection	NM® Cozy
Model	Chelsea CoolMax Pro Advanced 12" - Single/Twin
Warranty	10 Year Warranty
Condition	Brand new, manufacturer sealed.

Comfort Scale

Soft
Medium
Firm
Extra Firm

Comfort IQ™: This mattress is slightly softer compared to other medium-firm mattresses. (4/10)

Recommended For: Side Sleepers, Back Sleepers, Stomach Sleepers

Our Guarantees

+ Full Manufacturer’s Warranty

+ 100 Night Sleep Trial

+ Price Match Guarantee

+ Made in Canada

➜ Not sure which mattress is best for you? Try our MATTRESS SELECTOR to help you decide!

➜ See our REVIEWS from verified customers!

Description

NM 12" Medium Firm Memory Foam Mattress - Embrace Luxurious Comfort Each Night

Transform your sleep with the NM 12" Medium Firm Memory Foam Mattress, expertly engineered to provide the perfect balance of comfort and support for all sleeping styles. This mattress cradles you in plush layers that respond to your body, ensuring you wake up revitalized and ready for the day. Proudly crafted in Toronto, Canada, it embodies quality craftsmanship that you can trust.

Key Features

Superior High Resilient Bio-Foam Core: Experience exceptional support with our premium bio-foam core that contours gently to your body, promoting ideal alignment while alleviating pressure points for a restful night.
Cooling Gel Infused Visco Memory Foam: Enjoy the refreshing benefits of our gel-infused memory foam, which effectively regulates body temperature to provide a cool, pleasant sleep environment all night long.
Luxurious Cotton Channel Quilted Cover: Featuring a soft, breathable cotton cover, this mattress promotes airflow while enveloping you in gentle comfort. Its durable design ensures a fresh sleeping surface night after night.
Medium Firm Comfort Level: Perfectly crafted for all types of sleepers, this medium-firm mattress enhances spinal alignment, minimizes tossing and turning, and allows for deeper, uninterrupted slumber.

Benefits

10-Year Peace of Mind Warranty: Rest easy with our comprehensive 10-year warranty, guaranteeing your satisfaction and providing you with a secure investment in your sleep.
Quality Made Locally: Each mattress reflects superior craftsmanship, being proudly made in Toronto. Support local manufacturing while enjoying a durable product designed for lasting comfort.
Convenient Shipping: Arriving conveniently boxed and rolled, our mattress is easy to handle and set up, making it a hassle-free addition to your home.

Ideal For

This mattress is perfect for those seeking enhanced comfort and support, whether you're a side, back, or stomach sleeper. It's especially suited for residents in Toronto, Markham, Mississauga, Kitchener, Hamilton, Barrie, or North York who appreciate quality and innovative sleep solutions.

Key Details

Dimensions: 39" x 75" (inches) – 99cm x 190.5cm (centimeters)
Profile Height: 12 Inches
Firmness Rating: Medium
Warranty: 10 Year Warranty
Certifications: CertiPUR-US certified foams for safe and reliable quality
Guarantees: Enjoy free next-day delivery, a 100 night sleep trial, and a price match guarantee for your satisfaction.

Elevate your sleep sanctuary with the NM 12" Medium Firm Memory Foam Mattress. Revel in the plush comfort and sophisticated design that promises an exceptional night’s rest and a renewed sense of well-being every morning. Investing in this mattress means investing in your comfort and quality sleep.

Specifications

More Information
Mattress Size	Single/Twin
Mattress Type	Memory Foam , Foam Core/No Coils
Features	Cooling Technology , Temperature Regulating, Low Motion Transfer, Pressure Point Relief, Edge Support, Hypoallergenic, Eco-Friendly Manufacturing, Compatible with Adjustable Bed Base, Mattress In A Box
Trending & Offers	On Sale
Firmness	Medium
Core Type	NM® HD+™ High Density Support Core
Core Density	1.8 lb/ft³
Core Material	Polyurethane (polyfoam)
Brands	NM
Price Range	Great Value
Model	Chelsea CoolMax Pro Advanced 12" - Single/Twin
Collection	NM® Cozy
Condition	Brand new, manufacturer sealed.
Warranty	10 Year Warranty
Sleep Position	Side Sleepers, Back Sleepers, Stomach Sleepers
Cover Material	SoftLux Breathable Cotton
Colour	White, Grey
Quilt	0.5″ Cotton Channel Quilted Cover
Comfort Layers	2.5″ Gel Infused Visco Memory Foam, 2″ High Compression Bio-Foam
Support Layers	1.8lbs Pressure Relieving Comfort Foam, 2.5″ Supersoft High Density Foam
Mattress Core	5″ Optimal High Resilient Bio-Foam
Mattress Height in Inches	12 .00 Inches
Additional Features	Available boxed and rolled for easy shipping and handling.
Certifications	CertiPUR-US® certified foams.
Compatible With Adjustable Beds	Yes
Vented	Yes
Removable Cover	Yes
Handles	No
Care Instruction	Removable cover, dry clean to prevent shrinking.
Country of Origin	Canada
Single/Twin Size Dimensions	38" x 75" (inches) - 96.5cm x 190.5cm (centimeters)
Custom Sizes Available	Yes
Product Length (inches)	75 in
Product Width (inches)	38 in
Product Height (inches)	12 in
Product Weight (lb)	67.900000
Product Length (cm)	190.5 cm
Product Width (cm)	96.5 cm
Product Height (cm)	30.5 cm
Product Weight (kg)	30.8 kg
Product Barcode	628719062920
Product Model Code	NM-CHELSEA
Product SKU	NM-CHELSEA-SINGLETWIN
Product Category	Mattress
Product Sub Category Tier	Value
Product Type	Mattress - Foam Core
Product Sub Type	Memory Foam

More Info.

NM Brand Mattresses

Exceptional Comfort. Locally Crafted. Unmatched Value.

At NM, we believe everyone deserves a great night's sleep without overspending. That's why our NM Brand mattresses are proudly manufactured locally, ensuring exceptional quality and unbeatable prices you simply won't find anywhere else.

Premium Quality, Affordable Prices

Each NM mattress is thoughtfully crafted with premium materials and meticulous attention to detail, delivering outstanding comfort and support for every sleeper. By partnering directly with trusted local manufacturers, we eliminate unnecessary markups and bring you unmatched value.

Designed for Every Budget and Preference

Whether you prefer a firm mattress for optimal support, a plush surface for luxurious comfort, or something perfectly balanced, NM has the right mattress for your needs. Our wide range ensures you'll find the perfect match without stretching your budget.

Why Choose NM Brand?

Locally Manufactured: Supporting Canadian craftsmanship and quality control.
Superior Value: High-quality mattresses at unbeatable prices.
Variety and Versatility: Comfort options to suit every sleep preference and budget.
Durable and Reliable: Built to provide lasting comfort night after night.

Discover the NM difference—affordable, comfortable sleep that's locally crafted for your best night's rest.

Delivery Options

Greater Toronto Area and Ontario Delivery Map

What’s Included

We offer FREE DELIVERY to all major cities in Ontario and the surrounding area on orders over $199. A delivery surcharge of $45 applies to orders under $199.

Select your delivery date at checkout (if applicable) and add any special instructions in the order comments (e.g., “Ring Buzzer #1234”). If a date isn’t shown or selected at checkout, you’ll receive an email with scheduling options. Day‑of, you’ll get a text and email with a 2‑hour window and live tracking. Estimates apply to in‑stock items; rural or weather‑affected addresses may require extra time.

Greater Toronto Area and Ontario Free Mattress Delivery Map

Ontario Local Delivery Areas

Next‑day available

Halton Region

Burlington • Oakville • Milton • Georgetown • Halton Hills

Next‑day available

Peel Region

Mississauga • Brampton • Caledon

Next‑day available

City of Toronto

York • Including Downtown Core

Next‑day available

York Region

Vaughan • King • Richmond Hill • North York • Aurora • Newmarket • Markham • Scarborough

Next‑day available

Durham Region

Pickering • Ajax • Whitby • Oshawa • Whitchurch‑Stouffville

Next‑day available

Waterloo Region

Guelph • Kitchener • Cambridge • Waterloo

Next‑day available

Hamilton

Including Dundas • Grimsby • Stoney Creek • Ancaster

1–3 days on average

Niagara

Niagara Falls • Niagara‑on‑the‑Lake • St. Catharines • Thorold • Welland

Next‑day & 1–3 days

Simcoe Region

Barrie • Innisfil • Orillia • Midland • Collingwood • Bradford • Washago and more

1–3 days on average

Northern &
Eastern Ontario

Cobourg • Peterborough • Kawartha Lakes • Minden • Haliburton • Port Perry • Bowmanville and more

1–3 days on average

Western Ontario

London • Stratford • Woodstock • Brantford • Grand Bend • Port Elgin • Tobermory and more

Need delivery outside the GTA?

We also ship to all provinces in Canada at competitive rates (territories excluded). Enter your postal code at the top of the website to see what’s available.

Ready to Sleep Better?

Shop online 24/7 or visit any National Mattress location across Ontario. Spend $199+ and relax—your new mattress will arrive quickly and free of charge locally, or ship fast across Canada.

Shop Mattresses

Frequently Asked Questions

Where does National Mattress offer free local delivery?

We offer FREE local delivery to major cities across Ontario on orders of $199+. Check the region cards above for specific cities.

Do you ship mattresses across Canada?

Yes. We ship select roll‑packed mattresses to all provinces (YT, NT, NU excluded). Transit times range from 1–2 days in ON & QC to 3–4 days in BC and NL after shipping.

Is next‑day delivery available in the GTA?

Yes. FREE next‑day local delivery is available in many GTA and surrounding areas, subject to inventory and cutoff times.

What if my Ontario local order total is under $199?

A $45 delivery surcharge applies to orders under $199.

How do I schedule or change my delivery date?

Select a date at checkout. If a chosen date isn’t available, you’ll receive an email proposing an alternative—simply reply to reschedule. In‑store purchases can be scheduled at the time of sale.

Will I get tracking updates?

Yes. Local deliveries include day‑of text/e‑mail with a 2‑hour window plus live GPS tracking. Canada‑wide shipments include a courier tracking number once picked up.

Do you deliver to Yukon, Nunavut, or the Northwest Territories?

No. We currently do not deliver to YT, NU, or NT.

Need help? 1‑800‑631‑4883 [email protected]

Product Questions (25)

Customer Questions

What warranty and trial period come with this mattress?

Yes, we offer a 100 night sleep trial with any mattress purchase.

What eco-related certifications does this mattress have?

This mattress holds specific eco-related certifications for its materials and/or manufacturing such as organic content, recycled content, responsible sourcing, or low emissions. Review the certifications section on the product page for details on the...

Do I need a special mattress protector for this mattress?

A breathable, moisture-wicking mattress protector is ideal for a cooling mattress. It helps protect against spills and allergens without blocking airflow or trapping excess heat at the surface, so you can enjoy the mattress's built-in cooling features...

What warranty and trial period come with this mattress?

Yes, we offer a 100 night sleep trial with any mattress purchase.

What type of protector and sheets do you recommend for this mattress?

For this hypoallergenic mattress, we recommend a breathable, allergen-proof mattress protector and washable, natural-fiber sheets that can be laundered frequently. Check the accessories or recommendations section for products designed to complement ...

How should I care for and clean this mattress?

Use a mattress protector to guard against spills and stains, vacuum the surface occasionally to remove dust, and follow the manufacturer's spot-cleaning instructions for any accidents. Avoid harsh chemicals or soaking the mattress, and ensure it dries...

How does this mattress compare to your non-boxed models?

This mattress in a box uses the same quality of core and comfort materials as our non-boxed models, but is packaged for easier delivery. Compare its construction, firmness, and warranty with our traditionally delivered mattresses to see which option...

Can I use this twin mattress on a daybed or trundle bed?

Most daybeds and trundle beds are built for standard twin mattresses. Verify the bed's internal dimensions and any height limitations, and then compare them to the mattress measurements on the product page to ensure a proper fit.

How does this mattress help guard against dust mites and other allergens?

This mattress incorporates features such as tightly woven or treated covers, dense core materials, and/or breathable construction to help reduce dust mite and allergen buildup. See the product description for details on the specific anti-allergen strategies...

What hypoallergenic materials and certifications does this mattress use?

This mattress uses specific materials such as dust mite-resistant covers, well-ventilated foams or latex, and/or low-emission components chosen to support a hypoallergenic design. See the construction and certifications section for details on the materials...

Can I use a twin mattress on a bunk bed?

Yes, most bunk beds are designed for standard twin mattresses. Always confirm the bunk bed manufacturer's recommended mattress size and maximum height and choose a mattress that meets those guidelines for safety and proper guardrail height.

Is this foam mattress suitable for couples with different comfort preferences?

This foam mattress is designed with a balanced comfort and support profile that many sleepers find comfortable, but it may still favor certain preferences. Review the firmness rating, motion isolation information, and customer feedback to see how well...

Will this mattress hold its shape and pressure-relieving feel over time?

This pressure-relief mattress is built with comfort and support materials selected to maintain their feel under normal use. Review the durability details, foam densities or coil specifications, and care recommendations in the product description to ...

Is there a weight limit for this twin mattress?

Most twin mattresses list a recommended weight range or are designed to support typical child, teen, or single adult weights. Check the product specifications or warranty details for any stated weight limits to ensure the mattress is suitable for the...

Is this twin mattress compatible with an adjustable base?

Some twin mattresses, especially foam and hybrid models, are designed to bend and flex on adjustable bases. Check the product description for specific notes about adjustable base compatibility, and follow the manufacturer's guidelines to maintain warranty...

What types and densities of memory foam are used in this mattress?

This memory foam mattress uses specific memory foam and support foams such as higher-density support foam and softer memory foam comfort layers to balance pressure relief and durability. Check the construction and materials section for details on the...

Do I need a mattress protector for a twin mattress?

A mattress protector is highly recommended. It helps keep the twin mattress clean by guarding against spills, sweat, dust, and allergens, and it can significantly extend the life of the mattress, especially in kids' rooms or guest spaces.

Will this mattress maintain its shape and support over time?

This mattress in a box is built with materials selected to maintain their shape and support under normal use. Review the durability information, foam densities or coil specs, and care recommendations on the product page for guidance on its expected ...

Is this mattress delivered as a rolled mattress?

Yes, this mattress is compressed, rolled, and shipped in a box for convenient delivery. Check the delivery and packaging section for box dimensions, approximate weight, and any setup guidelines specific to this model.

Where does this mattress sit on your firmness scale?

This mattress is classified as medium-firm within our lineup, meaning it offers more support than our plush models but slightly more cushioning than our firm models. Check the firmness scale or comfort description on the product page to see exactly ...

Does this twin mattress sleep hot?

Temperature can depend on the materials and covers used. Mattresses with breathable fabrics, open-cell foams, cooling gel, or coil support cores tend to allow more airflow and feel cooler than very dense, unventilated foams. Look for any cooling features...

Will this twin mattress fit my existing bed frame?

Most standard twin bed frames are built to fit a mattress around 38 x 75. Check your frame's inner dimensions and compare them with the mattress specifications on the product page to ensure a proper fit with no gaps or overhang.

Is this mattress a good choice if my partner and I have different builds?

This medium-firm mattress is designed to offer a balanced feel that can work for a range of body types. If there is a large difference in weight or preferences, review the support specs (coil system, foam density, or zones) and customer reviews to see...

Can this mattress be used as my primary bed for the long term?

Yes, this mattress in a box is designed for regular nightly use when matched with the right base and care. Review the durability details, warranty coverage, and recommended maintenance practices to see how it is intended to perform as a long-term primary...

Is this considered a mattress or just a regular model?

This mattress is designed with specific cooling features such as breathable covers, ventilated foams, or gel-infused comfort layers intended to help manage heat and keep you more comfortable. Check the construction and materials section to see the exact...

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