Comfort IQ™ · Scored on what actually matters
NM Orthopedic Supreme 13″ Firm Flippable Tight Top Mattress — Performance & Feel
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 Orthopedic Supreme strikes a smart balance for a firm bed, scoring 8.9 for Pressure Relief because its thicker 4-inch comfort layer adds cushion the shorter models lack. It is built firm at 9 out of 10 on a tall 13-inch frame, so support still leads, but the extra foam softens the landing for back and stomach sleepers without killing the support. With a flippable two-sided design and a 10-year warranty behind it, this is the orthopedic build to reach for when you want firm support that does not feel hard.
Performance Scores
A tall, firm coil hybrid that scores evenly high across cooling, pressure relief and support, with a lively surface and a firm perimeter; the one honest trade-off is motion, which a connected coil carries more than foam.
Responsiveness10.0
Springy surface that actively helps you reposition
Edge Support9.7
Firm right out to the seam — full usable width
Cooling8.9
Extra height costs nothing in breathability
Pressure Relief8.9
Thicker comfort layer cushions a firm surface
Spinal Support8.9
Connected steel coils hold the spine level across the surface
Motion Isolation8.5
Thicker foam softens the jostle, but a tied coil still carries some
Durability7.5
Denser comfort foam holds its shape longer than the entry model
Off-Gassing 9.5 Brand 7.0 Sleep Trial 10.0 Value 9.3
In National Mattress's in-house Comfort IQ analysis, the Orthopedic Supreme scores: Overall 9.0/10, Cooling 8.9/10, Pressure Relief 8.9/10, Motion Isolation 8.5/10, Edge Support 9.7/10, Responsiveness 10.0/10, Spinal Support 8.9/10, Durability 7.5/10.
Best For
Firm-bed shoppers who still want cushion — pressure relief scores 8.9 thanks to the 4-inch comfort layer over the coils.
Back and stomach sleepers, including heavier sleepers — spinal support at 8.9 holds the hips up and the spine level on a thick 12.5-gauge connected coil core.
Combination sleepers who switch position all night — a perfect 10.0 responsiveness makes repositioning effortless.
Warm sleepers wanting a tall bed — cooling scores 8.9; the extra 4 inches of comfort never becomes a heat trap because air moves through the open steel coil core.
Long-term value buyers — denser comfort foam lifts durability to 7.5, and value scores 9.3 for a tall tempered-steel coil hybrid built locally.
Considerations
Strict side sleepers still want softer (pressure relief 8.9). The thicker comfort layer adds real give, but at firmness 9 the surface still leads with support — a sleeper who needs a deep, pillowy cradle should look plusher.
A connected coil carries more motion (motion isolation 8.5). The 4-inch foam takes the edge off, but the coils are tied into one steel system rather than wrapped to move on their own — a very light sleeper next to a restless partner will feel some movement, and a foam or wrapped-coil bed isolates better.
A tall 13-inch profile (height). The extra height is part of why it feels substantial, but check it against deep fitted sheets and a low bed frame before ordering.
How It Performs — The Measured Detail
Feel & Firmness · 9/10 Firm
Firm at 9 out of 10, but with more give underfoot than the entry model. The taller build pairs a thick 12.5-gauge connected steel coil core with a 4-inch comfort layer, so support leads while the extra foam keeps contact even and cushions the surface. The tied innerspring pushes back with energy, so the feel is firm and lively rather than slow and sinking.
Cooling 8.9
Even with a taller, thicker comfort build, the Orthopedic Supreme sleeps cool. Peak surface temperature falls in the 29.1-31.9 °C range and lands at the cool end, while the rise over baseline holds to 7.1-9.9 °C and sits low in that window too. The reason is the core: air moves freely through the open steel coil system rather than being sealed inside solid foam, so the extra 4 inches up top never turns into a heat trap. A breathable cotton-blend cover and firm surface complete it.
Pressure Relief 8.9
Among firm beds this one strikes a smart balance. Sinkage measures 1.51 inches, landing in the 1.17-2.19 inch range near the middle — a light, comfortable contour rather than the hard floating feel of a thin-comfort firm bed. It is built firm at 9 out of 10, so support leads, but the thicker 4-inch comfort layer adds cushion the shorter models lack, and the responsive steel coils give under the heaviest points to relieve a bit of shoulder and hip pressure. The most forgiving of the firm orthopedic builds.
Motion Isolation 8.5
The honest note that comes with a connected-coil bed: this 13-inch hybrid passes more partner movement than a foam mattress or a wrapped-coil design. The coils are helically tied into one responsive steel system, so a roll-over on one side carries across more than it would on a bed with independently moving springs. Peak transfer measures 7.83 m/s² — above the 3.03-6.33 range typical of better-isolating builds — and the disturbance takes about 1.18 seconds to settle, just past the 0.96-1.17 window. The thicker 4-inch comfort layer does absorb some of the jostle before it reaches the steel, which takes the edge off, but a foam or wrapped-coil bed is the better pick if motion isolation is the priority.
Edge Support 9.7
Edge support is a standout. Lying near the side, the perimeter compresses into the 1.62-3.68 inch range and sits at the firm end, holding far better than softer-edged builds. The tempered-steel coil system runs strong out to the border, so sitting on the side to dress does not cave the surface, and sleeping right against the edge gives full usable width with no roll-off. The firm coil core delivers the perimeter strength some beds charge extra for as a dedicated edge encasement.
Responsiveness 10.0
For a lively, easy-to-move-on bed, this hybrid is a top pick with a perfect 10.0. Total bounce travel measures 14.55 inches, well beyond the top of the 6.95-11.68 inch range, with recovery completing in 0.29 seconds, almost instantly inside the under-2.53-second window. The connected steel coil system under a substantial foam surface makes it genuinely springy — tied innersprings push back with energy, so the surface actively helps you reposition, and rolling, sitting up, and getting out of bed take almost no effort, with the thicker comfort layer softening the landing without killing the bounce.
Off-Gassing 9.5
Break-in odor is minimal here — any faint initial scent clears in under 12 hours, the quickest band there is. The foams are CertiPUR-US certified and independently tested for low VOCs, and a hybrid uses less total foam than an all-foam bed, with a steel coil core that has nothing to release. It is made locally in Ontario and delivered flat rather than vacuum-sealed in a box for a long voyage, so nothing has been trapped under compression for months.
Sleep Position & Body Weight Fit
Back and stomach sleepers are the core fit — the firm 9/10 surface with a thick connected coil core holds the spine level, and the 4-inch comfort layer keeps contact even. Heavier sleepers are well matched by the strong support that resists sinking. Average-weight sleepers get a stable platform with a touch of cushion. Strict side sleepers who need a deep cradle will still want softer, though the extra foam makes this the most forgiving firm orthopedic option.
At a Glance
Type · Hybrid Firmness · 9/10 Firm Height · 13″ Comfort layer · 4″ Fiberglass-free CertiPUR-US certified Made in · Canada Trial · 365 nights Delivery · Free on orders over $199
Full construction, per-size dimensions and coil counts are in the product description above. View 365-night trial details.
Frequently Asked
Is the NM Orthopedic Supreme firm or does it have some cushion?
Both, by design. It is firm at 9 out of 10, so support leads, but pressure relief scores 8.9 because the 4-inch comfort layer adds real cushion over the coils. Sinkage lands mid-range — a light, comfortable contour rather than the hard floating feel of a thin-comfort firm bed.
Does the taller NM Orthopedic Supreme sleep hot?
No. It scores 8.9 for cooling with peak surface temperature at the cool end of its range. The open steel coil core keeps air moving through the bed, so the extra 4 inches of comfort foam never turns into a heat trap — the height costs nothing in breathability.
Is the NM Orthopedic Supreme good for heavier sleepers?
Yes. Spinal support scores 8.9 on a thick 12.5-gauge tempered-steel coil core that lifts the hips and resists sagging under more weight, while the 4-inch comfort layer keeps contact even. Back and stomach sleepers carrying more weight are a strong fit for this firm, well-supported platform.
How long will the NM Orthopedic Supreme last?
It is built to hold its shape well, scoring 7.5 for durability — better than the entry orthopedic model because the comfort foam is thicker and denser, resisting the softening that retires a cheap mattress early. The tempered-steel coils resist sag, the flippable two-sided design spreads wear, and it carries a 10-year warranty.
Where is the NM Orthopedic Supreme made and can I try it at home?
It is built locally in Ontario, Canada, as National Mattress's house brand — same construction spec as the national names, without the brand markup. You get a 365-night sleep trial to live with it through every season, delivery is free on orders over $199, and you return it for a refund or exchange if it is not right.
