This Twin size 5-inch Thick Memory Foam Mattress - Firm Feel features 100% CertiPUR-US certified memory foam. With a 1” comfort layer of gel-infused cooling memory foam and 4" supportive base foam, its firm feel quickly conforms to the body to support and relieve pressure. The gel mattress includes a soft, removable cover and is easy to set up. Additionally, it is conveniently shipped in a reusable duffel bag. Twin size 5-inch Thick Memory Foam Mattress - Firm Feel Gel memory foam creates a cool sleep experience as it conforms to relieve pressure points Dual-layer technology - 1" soft, ventilated cooling layer with 4" supportive base foam layer Open cell construction creates more durable, long-lasting memory foam Rolled and compressed for shipping - easy to move and set up Dimensions - 74 x 38 x 5 inches