When you purchase this Tranquil Sleep Gel Memory Foam Mattress, you're purchasing cooling comfort at a price that won't keep you up and night. Pure Form design circulates air freely to provide superior cooling. A 2 inch thick layer of gel memory foam and a 6 inch layer of high-density support foam make for a medium firmness with a plushness that distributes body weight and relieve pressure points. A special manufacturing techniques prevents body imprints from forming on the Mattress surface. Expansion airflow technology provides superior cooling 2 inch of eco-smart gel memory foam 6 inch high-density eco-smart support foam CertiPUR-US foam manufacturing process provides a safe, chemical-free sleep surface Removable, washable knit zip-close cover Designed for use with adjustable base, traditional box spring, platform bed or bed frame (sold separately) Manufacturer's 10-year prorated warranty After-delivery instructions: Open your mattress package within 72 hrs. and let it expand Can be slept on within a few minutes of first expansion; expands fully in a few hrs. May take up to 48 hrs. to achieve full height Order today!