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The Sleepy's by Sealy 12 Inch Firm Gel Memory Foam King is a bed-in-a-box mattress built for back and stomach sleepers who want a hard, supportive surface. The gel-infused memory foam cradles the body and isolates motion, so a partner's movement stays on their side of the bed. At 12 inches it sits in the thicker range of boxed foam mattresses, which generally means more foam layers under you than thinner rivals. Owners rate it 4 out of 5 and most often praise the firm support for back and stomach sleeping, the motion isolation and the simple unboxing.
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Lowest price we've seen: $479.99 on Nov 7 at Mattress Firm. Tracked across 1 store since Nov 7.
Owners give it 4 out of 5 and mostly praise the firm support, the cradling foam and the motion isolation. Back and stomach sleepers report less tossing and turning. Complaints center on the firmness being too much for side sleepers and on the mattress running warm.
This 12-inch king mattress has a firm feel and uses gel memory foam. The foam contours gently to the body for pressure relief, and the mattress is built to keep you more on top of the surface with less sink. It also isolates motion, which reduces disturbance from a sleeping partner.
The mattress has a stretch knit quilted cover over a 2-inch memory foam comfort layer. Below that are a 6-inch support foam layer and a high-density foam foundation. It is designed for back and stomach sleepers.
It comes as a mattress in a box, with setup instructions included. A new mattress may feel firmer than the showroom model, so allow 30 to 60 days for the mattress and your body to adjust.
