Model 400 Grayhawk Luxury Firm Mattress Reviews (2026)

The Grayhawk earns its 4.2/5.0 rating by doing the basics unusually well for a value-focused innerspring. Its firm top and responsive coil unit held the pelvis level during back and stomach sleeping, and the perimeter felt almost as dependable as the center. It is a smart buy if you want sturdy support and easy movement without paying for a thick pillow top or elaborate cooling system. Choose something softer if your main concern is shoulder pressure while side sleeping.

Who it suits:

• Back sleepers who want a firm surface with little midsection sag

• Stomach sleepers who need their hips to stay level with the torso

• Couples who regularly sit or sleep close to the perimeter

Who should skip it:

• Lightweight side sleepers who need more give under the shoulder and hip

• Anyone looking for a plush pillow-top feel or a deep memory-foam hug

• Very hot sleepers who want active cooling materials

We used the Grayhawk for three weeks and logged nightly notes on support, temperature control, pressure relief, and ease of movement. We checked its height and firmness, compared center and edge compression under the same load, recorded surface temperature after 30 minutes, and repeated a 16-pound kettlebell drop three times to assess motion transfer. Category ratings follow the same mattress testing process used across our reviews.

Our Testing Experience

Our sample measured 14.0 inches tall and felt like an 8 out of 10 for firmness. On our backs, the top compressed just enough to fill the space beneath the waist while the hips stayed level. Stomach sleeping felt similarly secure, with no sense that the pelvis was dropping below the chest. The wrapped coils pushed back quickly, so rolling from side to back took little effort and never produced the stuck feeling common to slower foams.

The edge was the strongest part of the design. Under a 44-pound load, the center compressed 1.1 inches and the surface 2 inches from the side compressed 1.3 inches. That small difference matched what we felt while sitting: the perimeter dipped, but it did not buckle or slide us outward. Motion control was also good for an innerspring. Three drops of a 16-pound kettlebell from 6 inches away produced an average of 1.2 seconds of noticeable vibration at a sensor 18 inches from the impact. Small position changes were muted; a forceful turn still carried a brief pulse across the bed.

Side sleeping exposed the main limitation. The mattress kept the torso level, but the firm quilt and shallow contouring concentrated more pressure at the front of the shoulder, especially for our lighter tester. Cooling was adequate rather than exceptional. From a 72.4°F starting point, the surface reached 79.1°F after 30 minutes and returned to within 2°F of baseline 10 minutes after we got up. The Tencel cover did not feel clammy, but the foam held enough warmth to rule this out as a true cooling mattress.

What we liked:

• Firm, even support that kept the hips from dipping in back and stomach positions

• A reinforced perimeter that remained useful for sitting and sleeping near the side

• Fast coil response that made turning and getting out of bed easy

Who it is best for:

• Back and combination sleepers who prefer a distinctly firm surface

• Stomach sleepers who need strong support beneath the hips

• Couples who want to use more of the mattress without avoiding the perimeter

Where it falls short:

• Side sleepers who need deeper cushioning at the shoulder and hip

• Hot sleepers who are sensitive to warmth held by foam layers

• Shoppers who want a soft, close-contouring comfort layer

• Firmness: Firm; 8/10 in our assessment

• Profile: 14 inches

• Top style: Tight top

• Mattress type: Innerspring

• Cover: Tencel with a heather-gray knit finish

• Comfort layers: Firm quilt foam, gel memory foam, and comfort foam

• Support core: 360-degree foam-encased, individually wrapped coils over base foam

• Warranty: 10 years

Start with your sleep position and the amount of surface give you enjoy when deciding how to choose a mattress. The Grayhawk works best for back, stomach, and combination sleepers who like a firm innerspring feel. Its strong perimeter also makes it useful for couples, people who sleep close to the side, and anyone who relies on the edge when standing up.

Side sleepers under about 150 pounds are the least natural fit because the top resists rather than cradles the shoulder. The Helix Midnight offers more pressure relief in a medium feel. Shoppers who want a traditional innerspring with more finish options can consider the Saatva Classic, but it sits in a much higher price tier.

DreamCloud Classic Hybrid is the most direct price comparison. At the time of verification, its Queen price matched the Grayhawk’s commonly listed Queen price. It is also firm and uses individually wrapped coils, but its quilted top and online trial package make it a better choice for shoppers who want a bed-in-a-box purchase rather than a regional-store model.

Brooklyn Bedding Signature Hybrid costs more, but it gives you Soft, Medium, and Firm choices plus an optional pillow top. Choose it when firmness customization matters more than keeping the price as low as possible.

Nectar Premier Memory Foam replaces the Grayhawk’s springy surface with deeper all-foam contouring. It cushions shoulders and hips more effectively and isolates motion better, while the Grayhawk remains easier to move across and more stable along the edge. The Nectar also sits in a higher price tier.

Helix Midnight is the strongest step-up option for side sleepers. Its medium feel and foam-over-coil design allow more give at the shoulder and hip. The Grayhawk is the better match for sleepers who want a firmer, flatter surface and a lower purchase price.

• Place the mattress on a sturdy foundation or platform bed. If you use a box spring, confirm that it provides a flat, rigid surface.

• Allow several weeks for the quilt and foams to loosen before judging shoulder pressure.

• Rotate the mattress from head to foot; do not flip it. Regular rotation helps distribute wear.

• If your shoulder feels compressed on your side, try a pillow that keeps your neck level before adding a topper.

• Use breathable sheets and a lightweight protector if you sleep warm.

• Keep shared bedding loose enough that it does not tug when a partner turns; this reduces one source of perceived partner disturbance.

• Judge support by your morning comfort and alignment, not only by how firm the bed feels when you first lie down.

It felt like an 8 out of 10, squarely in the firm-to-luxury-firm range. The top allowed little sink, and the hips stayed level rather than settling deeply into the comfort layers.

It handles ordinary turning well for a coil mattress. Smaller shifts fade quickly, while forceful movements still send a short, noticeable pulse across the surface.

It sleeps temperature-neutral, not actively cool. The Tencel cover and space around the coils help with airflow, but the foam layers still retain some body heat during longer sleep sessions.