Better sleep awaits with the luxurious style and innovative triple-action cooling technology of the SleepComplete by Martha Stewart premium mattress perfect for back, side, and stomach sleepers; Softer than our firm, but firmer than our medium Soft moisture-wicking, breathable quilted Jacquard removable cover with CoolWeave technology; SleepComplete by Martha Stewart mattresses boast an array of premium features, all seamlessly integrated into one exceptional product. 4-Layer CertiPUR-US Certified foam design provides comfort, motion isolation, and stability ideal for co-sleepers Ventilated memory foam aids with air circulation while cooling gel high resiliency memory foam contours for comfort, and memory foam and high-density motion isolation foam layers to support body shape and evenly distribute body weight Dimensions - 76"W x 80"D x 12"H