Subrtex Memory Foam Mattress will help you enjoy a more comfortable, better night's sleep. Choose the Subrtex 6, 8, 10, or 12-inch profile mattress based on your preferences. It's available in Twin, Twin XL, Full, Queen, King, and California King sizes for RVs, Campers, Trailers / Mattress-in-a-Box. These tight-top memory foam mattresses are pressed, sealed, folded, and rolled to a more manageable size. Allow 48 hours for the bedding to expand to its proper size and shape. Subrtex mattress adopts high-density memory foam which prolongs the longevity of the mattress. All Subrtex mattresses are eligible for a 10-year manufacturer warranty.