Twin size 5-inch Thick Memory Foam Mattress - Firm FeelThis Twin size 5 inch Thick Memory Foam Mattress Firm Feel features 100% CertiPUR US certified memory foam and a 25 year warranty backing its premium materials. 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