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NM Cozy 10" Firm Memory Foam Mattress - Double/Full
Free delivery as soon as Tomorrow, Jul 26 UnavailableComfort IQ™ Firm, supportive feel — about 7–8 on the 10-point firmness scale, with memory-foam contouring. Ideal for back and stomach sleepers. Read Full Comfort Analysis
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.
An open bag mattress is a product whose original packaging has been opened, removed, or damaged. This includes showroom floor models, factory demo models, mattresses with damaged packaging, small scuffs/tears etc. The mattress itself is in excellent condition and comes with a full manufacturer's warranty. Read More about open-bag mattresses
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Firm support, built to last
The NM 10″ Firm Memory Foam Mattress is a firm (7/10) all-foam mattress that pairs a contouring memory-foam comfort layer over a high-density bio-foam support core, standing 10 in (25.4 cm) tall. Built for back and stomach sleepers who want firm, supportive contact, and for couples and light sleepers who need near-silent motion isolation. Made in Canada, with a 365-night sleep trial.
Five layers, top to bottom. The specs name them and the Comfort IQ™ scores rate how they perform; here's what each one actually does.
| Size | Dimensions | Height | Weight |
|---|---|---|---|
| Single/Twin | 38″ × 75″ (97 × 191 cm) | 10″ | 26 kg · 57 lb |
| Twin XL | 38″ × 80″ (97 × 203 cm) | 10″ | 27 kg · 60 lb |
| Double/Full | 54″ × 75″ (137 × 191 cm) | 10″ | 37 kg · 81 lb |
| Queen | 60″ × 80″ (152 × 203 cm) | 10″ | 43 kg · 95 lb |
| King | 76″ × 80″ (193 × 203 cm) | 10″ | 55 kg · 121 lb |
Real per-size values from our catalog — weights differ by size. Price is shown live in the buy box.
The National Mattress promise
Made in Canada and sold by salaried experts — never commission. Free delivery, a 365-night trial, and a 10-year warranty on every NM 10″ Firm Memory Foam Mattress.
This mattress scores 8.2/10 overall in NM in-house testing, leading on responsiveness (8.8/10). For the measured cooling, motion and pressure-relief scores, see the Comfort IQ™ performance breakdown below.
| Mattress Type | Memory Foam, Foam Core/No Coils |
|---|---|
| Product Features | Compatible with Adjustable Bed, Removable Cover, Cooling Technology, Temperature Regulating, Low Motion Transfer, Pressure Point Relief, Edge Support, Hypoallergenic, Eco-Friendly Manufacturing, Mattress In A Box |
| Trending & Offers | Best In Class, Top Rated, Most Popular |
| 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 | Arruda 10" - Double/Full |
| Collection | NM® Cozy |
| Condition | Brand new, manufacturer sealed. |
| Warranty | 10 Year Warranty |
| Sleep Position | Back Sleepers, Stomach Sleepers |
| Cover Material | SoftLux Breathable Cotton |
| Colour | White, Grey |
| Quilt | Smooth stretch-knit surface (no quilting). |
| Comfort Layers | 2″ Visco Memory Foam, High Compression Foam |
| Support Layers | 1.8lbs Pressure Relieving Comfort Foam |
| Mattress Core | 7.5″ Optimal High Resilient Bio-Foam |
| Mattress Height in Inches | 10.00 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 |
| Assembly Required | No |
| Care Instruction | Removable cover unzips for cleaning — dry clean only to avoid shrinkage. Rotate head-to-foot every 3 months and always use a mattress protector to keep the warranty valid. |
| Country Of Origin | Canada |
| Manufacturer Contact Information | https://www.nationalmattress.ca/ |
| Shipping | Scheduled delivery with National Mattress. Please select your preferred delivery date in the checkout. |
| Single/Twin Size Dimensions | 39″ x 75″ (inches) – 99cm x 190.5cm (centimeters) - 54.8 kg |
| Single/Twin XL Size Dimensions | 38″ x 80″ (inches) – 96.5cm x 203cm (centimeters) - 43.3 kg |
| Double/Full Size Dimensions | 54.0" x 75.0" (inches) - 137.2cm x 190.5cm (centimeters) - 36.5 kg |
| Queen Size Dimensions | 60″ x 80″ (inches) – 152.5cm x 203cm (centimeters) - 27.4 kg |
| King Size Dimensions | 76″ x 80″ (inches) – 193cm x 203cm (centimeters) - 25.7 kg |
| Custom Sizes Available | Yes |
| Single/Twin Size Weight | 25.69 kg |
| Single/Twin XL Size Weight | 27.4 kg |
| Double/Full Size Weight | 36.5 kg |
| Queen Size Weight | 43.26 kg |
| King Size Weight | 54.8 kg |
| Product Supplier Code | NM-MF-SM-10-FM-FULL |
| Product Category | Mattress |
| Product Type | Mattress - Foam Core |
| Product Sub Type | Memory Foam |
Comfort IQ™ · Scored on what actually matters
Comfort IQ™ scores eight dimensions 0–10 from National Mattress's in-house testing + construction — the same scale on every model, so two beds compare on what actually matters. Results vary by body type, base, and room temperature.
The NM 10″ Firm Memory Foam is built for alignment — Spinal Support 8.7. A dense HD+ high-density core pushes back evenly with no soft pockets for the hips to drop into, the firm-leaning surface keeps back and stomach sleepers flat and neutral, and the same dense build makes it a quiet, near-silent bed. Two inches of memory foam add a gentle, conforming top that eases pressure points (Pressure Relief 7.4) on a neutral-temperature surface (Cooling 7.9). For back and stomach sleepers who want firm, supportive alignment with a quiet, conforming memory-foam feel, this is a dependable choice.
An 8.2 overall anchored by strong alignment and durability, with the firm memory feel running neutral on heat and modest on pressure cradle.
In National Mattress's in-house Comfort IQ analysis, the NM 10″ Firm Memory Foam scores: Overall 8.2/10, Cooling 7.9/10, Pressure Relief 7.4/10, Motion Isolation 8.1/10, Edge Support 8.5/10, Responsiveness 8.8/10, Spinal Support 8.7/10, Durability 8.4/10.
A firm 7-of-10 with a memory-foam character — the two inches of memory up top give a slow, conforming contour while the dense HD+ core keeps the overall surface firm and supportive. You settle into it gradually rather than perch on top, but the firmness keeps you from sinking in deep. It is a melt, not a bounce.
Cooling on the NM 10″ Firm Memory Foam is neutral, running a touch warm of the typical mattress — peak readings hold in the 30.2-33.0°C range with the rise over baseline in the 8.2-11.0°C range. A SoftLux breathable cotton cover and a breathable poly layer move heat at the surface, but an all-foam core cannot flush warmth the way an open coil chamber does, so the cradling memory holds a little. By morning it settles into the 25.1-29.3°C range; a neutral sleeper is comfortable, dedicated hot sleepers will feel it warmer.
At a firm 7-of-10 feel, the NM 10″ Firm Memory Foam relieves pressure by spreading load across a supportive surface rather than swallowing you whole — sinkage lands in the 1.91-2.92 inch range, a controlled cradle from two inches of conforming memory foam over a poly transition. Shoulders and hips settle without bottoming onto the hard core. Side sleepers who want a plush pocket may prefer something softer; back and stomach sleepers are well served.
If you share the bed, this is a standout — peak transfer lands in the 1.34-4.63 m/s² range with motion settling out in the 0.50-0.71 second range, far quieter than a spring bed's ripple. A solid memory-and-poly stack over a dense foam core absorbs a partner's roll or a midnight trip before the energy can cross to your side. With no springs there is no transmission path, so a restless partner or a kid climbing in simply will not reach you.
Honest about an all-foam perimeter: with no coil ring or encasement to brace it, the edge gives more than a spring bed's — edge sinkage measures in the 3.17-5.24 inch range, so sitting on the side or sleeping right at the rim, you will feel the foam compress under you. That is the nature of the build, not a defect. For sleeping in the main field it is a non-issue; if you regularly perch on the edge, a coil-encased bed holds firmer there.
This is a slow, melting bed by design, not a springy one — total bounce travel measures in the 4.35-9.08 inch range with deliberate recovery times, returning completely in under 3.29 seconds and mostly settled in under 1.59 seconds. That comes straight from the two inches of memory foam up top, which yields under pressure and rises gently rather than pushing back. The payoff is a cradle that conforms as you settle; the trade-off is that repositioning takes a beat more effort.
New-foam smell is a non-event here — the off-gassing clears in 12-24 hours and the initial odor rates Low. The foams are CertiPUR-US certified, independently tested for low VOCs, and the bed is built locally in Ontario and roll-packed within days rather than compressed in a box for months in transit, where the scent concentrates. Unbox it, give it a day of air, and the faint manufacturing odor is gone.
The firm-leaning feel is the sweet spot for back and stomach sleepers, who get even, neutral support from the dense core; side sleepers still get enough support to avoid an S-curve, though strict side sleepers chasing a deep cushion may want softer. Average and heavier bodies are well held by the high-density build; lighter sleepers who want more give, and dedicated hot sleepers, are the two groups who may look elsewhere.
Full construction, per-size dimensions and coil counts are in the product description above. View 365-night trial details.
| Overall Score | 8.16 |
|---|---|
| Pressure Relief Score | 7.39 |
| Pressure Relief Ranking | Good |
| Pressure Relief Notes | All-foam build + layered memory foam create a deep cradle at the shoulders and hips; Support foams stabilize the sink to prevent bottoming out. Great for side sleepers. |
| Spinal Support And Alignment Score | 8.7 |
| Spinal Support And Alignment Ranking | Excellent |
| Spinal Support And Alignment Notes | Alignment is a question of structure, and this bed earns top marks on it. Beneath the comfort layers sits an NM HD+ high-density support core - dense, firm foam that holds the hips level with the shoulders for a neutral, full-surface line. With no coils there is no point-lift; the whole core pushes back evenly, which is exactly what keeps the spine from bowing. The firm-leaning feel is the sweet spot for most back and stomach sleepers, and side sleepers still get enough support to avoid an S-curve. |
| Support And Alignment Test Sinkage Depth | 1.91-2.92 inches |
| Support And Alignment Test Sinkage Feel | Deep |
| Support And Alignment Test Body Contour | Deep Cradle (body-hugging contour) |
| Cooling And Breathability Score | 7.91 |
| Cooling And Breathability Ranking | Very Good |
| Cooling And Breathability Notes | Breathable cotton quilted surface. |
| Cooling And Breathability Test Baseline Temp | 22°C |
| Cooling And Breathability Test Max Temp | 30.2-33.0 °C |
| Cooling And Breathability Test Ending Temp | 25.1-29.3 °C |
| Motion Isolation Motion Transfer Score | 8.12 |
| Motion Isolation Motion Transfer Ranking | Very Good |
| Motion Transfer Notes | Outstanding motion isolation: Slow-response memory foam helps absorb movement before it spreads; Multiple comfort foams layer in additional vibration control. |
| Motion Transfer Test Accel Range | 1.34-4.63 m/s² |
| Motion Transfer Test Motion Duration | 0.50-0.71 seconds |
| Edge Support Score | 8.47 |
| Edge Support Ranking | Very Good |
| Edge Support Notes | A supportive bio€€˜foam core (1.8 lb/ft³) and firmer support help the edges hold their shape for sleeping (or sitting) closer to the side. |
| Edge Support Test Max Sinkage | 3.17-5.24 inches |
| Edge Support Test Lying Support | Fair |
| Edge Support Test Reinforced Edge | NO |
| Responsiveness And Ease of Movement Score | 8.76 |
| Responsiveness And Ease of Movement Ranking | Excellent |
| Responsiveness And Ease of Movement Notes | More contouring & slower to respond, so switching positions can take a bit more effort. Key factors: a thin memory-foam layer adds contouring without removing all the bounce; the firmer surface helps you push off & reposition. |
| Response Test Mostly Recovered | under 1.59 sec. |
| Response Test Complete Recovery | under 3.29 sec. |
| Odor And Off Gassing Score | 8.5 |
| Odor And Off Gassing Ranking | Excellent |
| Odor And Off Gassing Notes | New-foam smell is a non-event here. The off-gassing clears in under 12-24 hours and the initial odor rates Low. Two things drive that: the foams are CertiPUR-US certified, independently tested for low VOCs, and the bed is built locally in Ontario and roll-packed for delivery within days - not compressed in a box for months in transit like an imported bed-in-a-box, where the scent concentrates. Unbox the NM 10" Firm Memory Foam, give it a day of air, and the faint manufacturing odor is gone. The natural cotton cover helps keep things clean-smelling. |
| Off Gassing Test Initial Smell Strength | Low |
| Off Gassing Test Off Gassing Period | 12-24 hours |
| Durability And Build Quality Score | 8.4 |
| Durability And Build Quality Ranking | Very Good |
| Durability And Build Quality Notes | Durability on a foam bed is decided where impressions form - in the comfort layer - over a core that does not fatigue. This NM memory-foam bed runs a genuine high-density memory comfort layer above the HD+ high-density support core, both built to resist the soft spots that cheaper low-density foam develops within a year or two. There are no coils to lose tension and no edge ring to break down. It is made in Ontario and backed by National Mattress's 10-year warranty - and the high-density build is the reason that promise is realistic rather than optimistic. |
| Brand Score | 7 |
| Brand Ranking | Good |
| Brand Notes | NM is National Mattress's own house line, made locally rather than shipped in under a national label. The pitch is straightforward: the same construction spec you would find in the brand-name beds sitting next to it on the floor, minus the licensing markup baked into those names. Because it is National Mattress's own product they stand behind it directly - the warranty is honored in-store, by the people who sold it to you, not routed through a third-party manufacturer's claims process. You are buying the build, not the badge. |
| Bounce Test Max Depth | 5.30-7.48 inches |
| Bounce Test Max Rebound | under 3.24 inches |
| Bounce Test Total Bounce | 4.35-9.08 inches |
| Noise Notes | Silence is the easy win for an all-foam mattress. There are no springs, no coils, no metal hardware anywhere in the build - nothing that can squeak, creak, or ping when you shift your weight or a partner climbs in. Where a spring bed can develop a telltale noise as coils age, the NM 10" Firm Memory Foam stays quiet for its whole life by construction. If a soundless sleep surface matters to you - light sleepers, shared beds, a baby down the hall - foam is the format that delivers it. |
| Fiberglass Free | YES |
| Sleep Trial Score | 10 |
| Sleep Trial Ranking | Exceptional |
| Sleep Trial Notes | This comes with a 365-night sleep trial, one of the longest you will find anywhere. A mattress needs weeks before your body fully adjusts, and a full year lets you keep testing it through every season - the warm nights when cooling matters and the cold ones when you burrow in. If it is not right for you by the end of that window, you return it for a refund or an exchange. That is a year of real sleep to decide, not a showroom-floor minute. |
| Value Notes | Dollar for dollar, the NM 10" Firm Memory Foam is one of the stronger value plays in the lineup. You are getting genuine high-density foam - both in the memory comfort layer and the HD+ support core - where beds at this price routinely cut corners with low-density fillers that soften early. Add a natural cotton cover, CertiPUR-US certified foams, local Ontario manufacturing, a 10-year warranty, and a 365-night trial, and the amount of real material and assurance you are getting punches above its tier. You are paying for substance, not a name. |
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.
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.
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.
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.
We offer FREE DELIVERY to all major cities in Ontario on orders over $199. A delivery surcharge of $45 applies to orders under $199.
Select your delivery date at checkout and add any special instructions in the order comments. You'll receive a 2‑hour window and live tracking on delivery day.
We ship select roll‑packed mattresses to all provinces (YT, NT, NU excluded). View Canada-wide shipping options →
View complete delivery information including FAQs, or contact our team directly.
It is built firm at 7 out of 10, but it leads with a memory-foam cradle, so the surface feels soft on contact before the dense core supplies firm support underneath. Lightweight sleepers sometimes read it as medium. Two inches of visco memory yield first...
Back and stomach sleepers who want affordable firm support are the sweet spot. It scores 8.7 for spinal support, the dense core holding the hips level with the shoulders in a neutral line, and several owners report back pain easing on it. Side sleepers...
Somewhat, by design. It is a melting, conforming surface rather than a springy one: full recovery measures up to about 3.3 seconds, coming from the two inches of memory foam that yield under pressure and rise gently. The payoff is a cradle that contours...
It runs neutral, a little warmer than a spring bed. Cooling scores 7.9: a SoftLux breathable cotton cover and breathable poly layer move heat at the surface, but an all-foam core cannot flush warmth the way an open coil chamber does, so the memory foam...
No box spring. As an all-foam mattress it needs a solid, flat, evenly supportive base: a platform bed, slats spaced no wider than three inches, or a bunkie board over an existing frame. A sagging or springy foundation lets the foam dip unevenly and can...
It scores 8.4 for durability, running genuine high-density memory foam over an HD+ high-density core, both built to resist the soft spots cheaper low-density foam develops early. A few owners have noted the removable cover stretching or loosening with...
Excellently, this is its standout for couples. Peak transfer measures as low as 1.34 on the meter scale, far quieter than a spring bed's ripple, with movement settling in about half a second. The memory-and-poly stack over a dense foam core absorbs a...
It holds for sleeping but softens for sitting, which is the nature of a coil-free perimeter. Edge support scores 8.5, with edge sinkage measuring 3.17 to 5.24 inches, so sitting on the side to tie your shoes or sleeping right at the rim compresses the...
Hardly, and it clears fast, scoring 8.5 for off-gassing. The initial odor rates low and dissipates in roughly 12 to 24 hours because the foams are CertiPUR-US certified for low VOCs and it is built in Ontario, then roll-packed and delivered within days...
Yes. Because this NM Firm Memory Foam mattress is all foam with a memory comfort layer and no rigid coils, it conforms easily to an adjustable base as the head and feet rise, and its 10-inch height flexes without harm. Heads-up for Canadian shoppers: ...
You get a full 365 nights to decide, one of the longest trials anywhere. Allow a few weeks of break-in first: the memory foam settles and your body adapts to the firm-leaning feel, which often softens slightly from its out-of-box state. If it still is...
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