Serta 30-inch Portable Rollaway Guest Office Spare Bedroom Bed with Twin Mattress Set includes: 30-inch roll-away bed frame, poly fiber Serta mattress Construction: Poly fiber mattress Materials: Heavy duty angle steel rollaway bed designed for durability Frame dimensions: 14 inches high x 30 inches wide x 73 inches long Mattress dimensions: 4 inches high x 30 inches wide x 72 inches long