You are sure to find the size that best fits your sleep space—whether that is a bedroom at home, a custom bunk bed, or even an RV sleep nook. (We offer hard to find RV bunk measurements and RV king sizes, all conveniently light weight.) Short Full size, 48 by 74 inches. Keep your investment secure no matter where life takes you. This all-foam design is protected from splashes and spills thanks to our innovative Nano Stain Terminator protector. (Sewn-on cover for your convenience.) Our dense foams are built to last a decade all while keeping you cool. Our gel swirl memory foam eliminates hot nights and keeps you cool. Our all-foam design gives you the response, contouring, and pressure point relief typically only found in a hybrid mattress design. Our premium foams sport open cell technology to allow body heat to dissipate—and to keep you cool all night long. We start with 2 inches of gel swirl memory foam, followed by 4 inches of high density foam for deep compression support.