Four-inch high-density polyurethane foam on the 73 x 32 x 4 in mattress conforms to body curves to support more comfortable sleep on this twin size folding bed. The reinforced metal frame with 15 solid birch wood slats distributes weight evenly for a 490-lb load capacity during nightly use or as a guest bed. Anti-falling bars at each end and hook and loop fasteners along the frame work together to keep the mattress securely in place. Smooth rolling wheels, including lockable and directional wheels, make it easier to move the bed between rooms or reposition it as needed. When not in use, the frame folds to 31 x 13 x 44 in and the support legs secure with hook and loop fasteners for compact storage. Anti-slip foot pads help stabilize the 78.5 x 31 x 15 in bed on hard floors, and the detachable mattress cover is machine washable for simple care.