Sleep Master's folding guest bed is the same size as a twin-size bed. Most folding or rollaway beds measure 30" wide, but our folding guest bed measures 38" wide x 75" long. It has a 4" foam mattress to give your guests a comfortable night's sleep away from home. The top layer is 1" of super soft foam with a 3" high-density foam base for support. The grid design of the metal frame provides support and prevents the mattress from sagging. The zippered mattress cover is a soft polyester fabric that is removable and washable. The frame sits 14" off the ground, leaving room to store away small luggage. The guest bed folds in half for portability and makes it easy to tuck away when not in use.