Good sleep awaits with the luxurious style and innovative dual-action cooling technology of the SleepComplete by Martha Stewart premium mattress perfect for side sleepers; Softer than our medium option 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. 3-Layer CertiPUR-US Certified foam design provides comfort, motion isolation, and stability ideal for co-sleepers Memory foam layer for contouring and motion isolation; cooling gel highly resilient foam layer for cooling and additional contouring; and high-density motion isolation foam layer to support body shape and evenly distribute body weight Dimensions - 39"W x 75"D x 12"H