Impress yourself or your guest with Best Price Mattress ¡s 4″ tri-fold memory foam mattress- the latest in portable comfort. The tri-fold mattress is constructed with 1.5 inch of memory foam infused with activated charcoals to maintain freshness and 2.5 inch of high-density base foam for added comfort and support. The zippered, super-soft, poly-jacquard cover is removable and machine washable. Our mattresses are CertiPUR-US certified. You can rest assured knowing that you or your guest are sleeping on sleep surface. It is great for camping, overnight guest, car trips and sleepovers. And, for those evenings when one wants to sleep in another room, just unfold and enjoy the rest.