When it comes to your comfort chime in for this 12-inch twin memory foam mattress. Its foam contours to your body delivering amazing support pressure relief and comfort. The thick memory foam layer is supported by a super thick layer of firm support foam. Plus this mattress is made of hypoallergenic material keeping dust mites pollen mold and pet dander out. This mattress arrives in a box for easy set up. Foundationbox spring available sold separately.