Home

NM 6" Firm Tight Top Foam Mattress - Twin XL

Q: What are the exact dimensions of this 6 inch mattress?

This mattress is approximately 6 inches high and is available in standard width and length sizes such as Twin, Twin XL, Full, Queen, or RV specific dimensions. Check the size chart on the product page for exact width, length, and height measurements.

Meet NM® HD+™ Core—mattresses built around high‑density foam for durable support, low motion transfer for quieter nights, zoned lumbar for alignment, and reinforced edges for full‑width comfort. Available in firm, medium, and plush feels across Twin, Twin XL, Full/Double, Queen, and King.

Top Features

Add To Compare

– High Density Foam Core

– High Density Foam Comfort Layer

– Cotton Channel Quilted Cover

– 5 Year Warranty

– Made In Toronto, Canada

Our Price:

$238.00

Retail Price $499.00

In stock

Mattress Size : Twin XL

View All Sizes

Boxspring

Without Boxspring

Mix-Match Boxspring

Matching Boxspring

Options

Standard 8" + $110.00

Low Profile 4" + $110.00

Platform 2" + $110.00

Options

High Profile 8" + $125.00

Low Profile 4" + $125.00

Qty

Applicable Offers

+ Get 15% OFF any Sleep Accessories Bundle with the purchase of any mattress.

+ Become a VIP MEMBER and SAVE even more on your mattress purchase!

➜ 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 6" Firm Tight Top Foam Mattress - Twin XL

Skip to the end of the images gallery

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

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

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

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

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

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

Skip to the beginning of the images gallery

Style	Traditional, Foam Core/No Coils
Firmness	Firm
Coil Count	N/A
Coil Type	N/A
Core Type	NM® HD+™ High Density Support Core
Core Density	1.8 lb/ft³
Height	6 Inches

Collection	NM® HD+™ Core
Model	Dawn - Twin XL
Warranty	5 Year Warranty
Condition	Brand new, manufacturer sealed.

Comfort Scale

Soft
Medium
Firm
Extra Firm

Comfort IQ™: This mattress is slightly softer compared to other firm mattresses. (7/10)

Recommended For: 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 6" Firm Tight Top Foam Mattress - Experience Luxurious Support Every Night

Enhance your nightly retreat with the NM 6" Firm Tight Top Foam Mattress, meticulously crafted in Toronto, Canada. This extraordinary mattress seamlessly blends firm support with fabulously plush comfort, catering to your every need for revitalizing sleep. With its resilient High-Density Foam Core, sleep enthusiasts can expect optimal spinal alignment and gentle pressure relief, transforming every night into a refreshing experience.

Key Features

High Density Foam Core: Designed for unwavering support, it ensures your spine stays properly aligned, guaranteeing a refreshing wake-up every morning.
Comfort Layer: Indulge in a luxurious feel with our High-Density Foam Comfort Layer, delivering cloud-like softness while maintaining durability and support.
Quilted Cover: The breathable Cotton Channel Quilted Cover promotes airflow, creating a cool and inviting sleep atmosphere.
Warranty: Enjoy the peace of mind that comes with a robust 5-Year Warranty, ensuring your investment remains protected for years to come.
Locally Made: Crafted with pride in Toronto, showcasing our dedication to superior Canadian craftsmanship.

Benefits

Ultimate Comfort: This mattress is expertly designed for rejuvenating rest, making it ideal for back, side, and stomach sleepers alike.
Pressure Relief: The harmonious fusion of firmness and cushioning alleviates pressure points, enriching your overall sleep quality for a more satisfying night's rest.
Eco-Friendly Durability: Made with CertiPUR-US certified foams, you can rest assured knowing you're sleeping on a safe and long-lasting product free of harmful chemicals.
Easy Shipping: Arriving thoughtfully boxed and rolled, enjoy the convenience of free next day delivery right to your doorstep!

Ideal For

Guest Rooms: Provide an exceptional sleep experience for your guests with a comfy and supportive mattress that they'll cherish.
Children's Beds: The perfect choice for growing kids needing reliable support for sound sleep during their formative years.
Every Household: Perfectly suited for anyone desiring a competitive balance between affordability and high-quality comfort.

Details

The NM 6" mattress boasts a profile height of 6 inches, with overall dimensions of 38″ x 80″ (inches) or 96.5cm x 203cm (centimeters).

Profile Height: 6 Inches
Firmness: Firm
Cover Material: Soft Luxurious Cotton Cover with a non-skid bottom for added safety
Support Layers: High Density Foam for outstanding stability
Comfort Layers: High Density Foam ensuring an inviting sleep surface

Discover the unparalleled comfort and craftsmanship of the NM 6" Firm Tight Top Foam Mattress. Experience how this thoughtfully designed mattress can transform your sleep, ensuring that every night is filled with soothing support. Ready to elevate your rest? Visit our local stores in Toronto, Markham, Mississauga, Kitchener, Hamilton, Barrie, or North York to experience the comfort for yourself!

Specifications

More Information
Mattress Size	Twin XL
Mattress Type	Traditional , Foam Core/No Coils
Features	Low Motion Transfer , Edge Support, Compatible with Adjustable Bed Base, Mattress In A Box
Trending & Offers	On Sale
Firmness	Firm
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	Dawn - Twin XL
Collection	NM® HD+™ Core
Condition	Brand new, manufacturer sealed.
Warranty	5 Year Warranty
Sleep Position	Back Sleepers, Stomach Sleepers
Cover Material	SoftLux Breathable Cotton
Colour	White
Quilt	0.5″ Cotton Channel Quilted Cover
Comfort Layers	Firm BioComfort™ Foam
Support Layers	HD+™ High Density Foam
Mattress Core	6″ Optimal High Density Foam Support
Mattress Height in Inches	6 .00 Inches
Additional Features	Available boxed and rolled for easy shipping and handling.
Certifications	CertiPUR-US® certified foams.
Compatible With Adjustable Beds	Yes
Vented	No
Removable Cover	No
Handles	No
Care Instruction	Spot clean. Mattress protector recommended.
Country of Origin	Canada
Single/Twin XL Size Dimensions	38" x 80" (inches) - 96.5cm x 203.2cm (centimeters)
Custom Sizes Available	Yes
Product Length (inches)	80 in
Product Width (inches)	38 in
Product Height (inches)	6 in
Product Weight (lb)	36.200000
Product Length (cm)	203.2 cm
Product Width (cm)	96.5 cm
Product Height (cm)	15.2 cm
Product Weight (kg)	16.4 kg
Product Barcode	628719062982
Product Model Code	NM-DAWN
Product SKU	NM-DAWN-TWINXL
Product Category	Mattress
Product Sub Category Tier	Value
Product Type	Mattress - Foam Core
Product Sub Type	Traditional - Tight-Top

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 (18)

Customer Questions

How long should I wait before sleeping on this mattress after unboxing?

This mattress can usually be slept on the same day you unbox it, but it may take up to 24-72 hours to reach its full height and intended feel. Consult the product instructions for specific recommendations on minimum expansion time before regular use...

What are the exact dimensions of this 6 inch mattress?

Does this Twin XL mattress come rolled or boxed?

Many modern Twin XL mattresses are shipped compressed and rolled in a box for easier delivery and setup. Check the product details for packaging information and follow the unboxing instructions to allow the mattress to expand fully.

Is this mattress supportive enough for a heavier stomach sleeper?

This mattress uses a robust support core designed to handle higher body weights while limiting sinkage in the hip and midsection areas. Its firmness and materials help keep the lower back better aligned, which is especially important for heavier stomach...

If I use the sleep trial, does that affect my warranty?

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

Is this tight top mattress suitable for my sleep position?

This tight top mattress has a specific firmness and support profile that will suit some sleep positions better than others. Check the comfort description and any recommended sleep positions in the product details to see whether it is ideal for side, ...

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...

Is this mattress compatible with ergonomic or contour pillows for side sleepers?

Yes. This mattress works well with a range of ergonomic or contour pillows designed for side sleepers. Its cushioning surface allows your shoulder to nestle in while your pillow supports your neck and head, helping maintain a more neutral alignment.

Is this mattress available in sizes suitable for side-sleeping couples and singles?

This mattress is offered in multiple sizes, from Twin or Twin XL for single sleepers up to Queen and King sizes suitable for side-sleeping couples. Check the size options on the product page to pick the dimensions that best match your body size, room...

Is this 6 inch mattress suitable for a daybed?

Yes, this 6 inch mattress can work well on many daybeds, where a lower profile looks more like a sofa during the day and is comfortable enough for lounging or occasional sleeping. Check your daybed's recommended maximum mattress height and dimensions...

Can I use a Twin XL mattress on a bunk bed?

Some bunk beds are designed for standard twins, while others can accommodate Twin XL. Always confirm the bunk bed manufacturer's recommended mattress size and maximum height, and choose a mattress that matches those specifications for safe guardrail...

Is this firm mattress a good choice if my partner and I are different weights?

This firm mattress is designed to provide strong support across the surface, which can help when there is a weight difference between partners. Review the support specs (coil strength, foam density, or weight capacity) and customer reviews to see how...

Is this 6 inch mattress supportive enough for a heavier sleeper?

This 6 inch mattress is designed primarily for lighter sleepers, children, or occasional use. Heavier sleepers may prefer a thicker mattress with more robust support and cushioning. Check the weight guidelines and product description to determine if ...

Will this 6 inch mattress feel too low in a platform bed in a small room?

A 6 inch mattress will sit lower than standard mattresses, which can be an advantage in rooms with low ceilings or small spaces. If you prefer a higher sleep surface, you can pair it with a taller bed frame or box foundation to raise the overall height...

Is this 6 inch mattress all foam or does it have springs?

This mattress uses the construction described on the product page, such as all foam or a hybrid of coils and foam. Check the materials section for details about the support core, comfort layers, and cover so you know exactly what is inside.

Is this 6 inch mattress compatible with an adjustable base?

Some 6 inch foam and hybrid mattresses are flexible enough for adjustable bases. Check the product description for notes on adjustable base compatibility and follow the manufacturer's guidelines to make sure using an adjustable base will not affect...

Will this 6 inch mattress feel different from my current thicker mattress?

Yes, a 6 inch mattress will usually feel firmer and simpler than a thicker mattress with multiple comfort layers. You may notice less sink and contouring. Check the firmness rating and user reviews on the product page to get a sense of how the feel compares...

Is this 6 inch mattress a good value for the price?

This 6 inch mattress is designed to balance cost, comfort, and support. Review the materials, warranty, and customer reviews on the product page to see how it performs in real use and whether it offers the value you expect for your budget and intended...

Did you find what you were looking for?

Your question:

Your name:

get notification on email when the answer is ready

Your e-mail: