12-inch all-foam mattress with a medium feel, made for sleepers who enjoy light, responsive memory foam with the cooling benefits of gel. Ultra-breathable ActivAir foam bounces back like latex while contouring to pressure points, and Plush CoolSync foam contours with cooling gel to balance sleep temperature. Supportive transition and base foams create a stable foundation that stays flexible for adjustable bases, under a soft-knit cover. The CertiPUR-US certified foam arrives compressed, rolled and boxed. Covered by a 10-year warranty.