Mainstays Sizes: Twin / Full / Queen / King Premium gel memory foam promotes proper sleep posture support Comfortable sleep temperature Extends Mattress Life Thickness: 3-inch Instantly upgrade your mattress and sleep better CertiPUR-US® certified foam, ensuring the product is made without harmful chemicals and is tested by independent labs to meet rigorous standards for content, emissions, durability, and performance Premium quality materials certified by Oeko-tex® Standard 100 Ships compressed, rolled and shipped to conveniently arrive at your doorstep for easy setup 5 Year Manufacturer's Warranty Age Group: Adult Product Dimensions: Approx. 79? L × 59? W × 3? H (Queen size), designed to fit standard queen mattresses.