OPEN BAG - NM 10" Medium Firm Euro Top Mattress - Queen

Comfort IQ™ · Scored on what actually matters

NM 10″ Medium Firm Euro 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 10″ Medium Firm Euro Top Mattress sleeps cool for its class (Cooling 9.1) because air moves freely through its 1000-coil hybrid core instead of being sealed inside a foam slab. It is a genuine hybrid at a true Medium 4/10 — pocket coils for airflow and even, full-surface spinal support (9.1), a memory layer for a balanced cradle (8.7), and the highest value rating in this group (9.8). Heavier 13-gauge wire gives the core real staying power, holding its shape far longer than the thin gauges common at this price. For a balanced medium-firm feel, cool sleep, and standout value, the NM 10″ Euro Top is a hybrid that punches well above its price.

Performance Scores

In National Mattress's in-house Comfort IQ analysis, the NM 10″ Medium Firm Euro Top scores: Overall 8.6/10, Cooling 9.1/10, Pressure Relief 8.7/10, Motion Isolation 8.4/10, Edge Support 8.3/10, Responsiveness 8.8/10, Spinal Support 9.1/10, Durability 7.5/10.

Best For

Considerations

How It Performs — The Measured Detail

Feel & Firmness · 4/10 Medium

An inch of memory foam and a thin poly layer sit over a 1000-coil pocket system, giving the NM 10″ a true Medium 4/10 feel with a euro-top finish. The memory contours the shoulders while the coils push back underneath, so it cradles without swallowing — a balanced, settle-in surface that still has the lively rebound of a spring core.

Cooling 9.1

The NM 10″ Medium Firm Euro Top reads slightly above neutral rather than dead cool, and the numbers bear that out — peak surface temperature settles in the 29.1-31.8 °C range and the warm-up over baseline holds to 7.1-9.8 °C. The SoftLux breathable cotton cover and a thin poly layer keep the touch point from banking heat, while air moves freely through the open pocket-coil core instead of being sealed inside a foam slab. That airflow is what keeps a coil-supported bed at this price from climbing the way an all-foam build would, and it's why cooling is this bed's top axis.

Pressure Relief 8.7

Lie down on the NM 10″ and the surface gives a balanced cradle rather than a swallowing sink — sinkage measures into the 2.00-3.01 inch band and settles right around the middle of it. At a medium 4-out-of-10 feel, the inch of conforming memory foam spreads weight across the shoulders and hips while the pocket coils beneath flex independently under the heaviest points, so nothing pins. That moderate depth is the profile most side and combination sleepers reach for: enough give to relieve the joints, enough support underneath to climb out easily in the morning.

Motion Isolation 8.4

What a couple notices is whether one person's roll travels across the bed, and this NM hybrid keeps it local — peak transfer reads in the 2.84-6.13 m/s² range and the disturbance settles within roughly 0.95-1.16 seconds, both comfortably contained for a coil bed. With 1000 independently-pocketed coils, a shift on one side flexes only the springs directly under it rather than rippling across the whole core, and the inch of memory foam on top absorbs whatever reaches the surface. That is the stay-put behavior you want when a restless partner gets in and out.

Edge Support 8.3

Edge firmness decides whether the usable surface runs all the way to the seam, and on the NM 10″ it does. Sitting on the side to dress, the bed sinks into the 2.50-4.58 inch range and lands toward the firmer side of it, so there's less roll-off at the border than on a softer-edged build. The full pocket-coil system carries right out to the perimeter rather than dropping away to foam, which keeps the whole sleep surface in play. On a Queen two people share, that holds the night out near the edges instead of crowding everyone toward the middle.

Responsiveness 8.8

Responsiveness is how readily the surface lets you reposition without feeling stuck, and the NM 10″ reads lively — total bounce travel measures in the 5.97-10.71 inch range and recovery completes inside the under-2.88-second window. The pocket coils give a real push-back feel and the inch of memory contours without smothering that spring, so changing positions is easy rather than a climb out of a pit. For combination sleepers who move around through the night, that balance of bounce and recovery reads well.

Off-Gassing 8.5

Any new-foam smell on this one clears in 12-24 hours, well short of the multi-day airing many compressed imports need. Two things keep it brief: the foams are CertiPUR-US certified and independently tested for low VOCs, and the bed is made locally in Ontario then roll-packed shortly before it reaches you, so it ships within days rather than sitting compressed in a box for months. The initial scent rates low, and the natural cotton cover adds to the clean feel once you unbox it — open the windows for an afternoon and it's gone.

Sleep Position & Body Weight Fit

The medium feel and coil support make this a broad fit. Side sleepers get a cradle for the shoulder and hip; back sleepers get the lumbar filled with the coils holding the pelvis level; combination sleepers get lively rebound to move on. The 13-gauge coils carry support across light, average, and heavier builds without bottoming out. Strict stomach sleepers who want a hard, flat plane may prefer a firmer surface.

At a Glance

Full construction, per-size dimensions and coil counts are in the product description above. View 365-night trial details.

Frequently Asked