When the guest room is really just a hallway closet and good intentions, this folding twin bed steps in. It unfolds to 78.5 x 31 x 16.5 in with its 4 in high-density foam mattress already strapped on, so there is no last-minute mattress hunt. The 72.5 x 31 in foam pad conforms to the sleeper's curves over 15 solid birch wood slats, and the whole deck rides about 10 in off the floor on a rustproof steel tube frame with a 490 lb weight capacity.Small details keep the night uneventful. Anti-falling bars and hook and loop fasteners hold the mattress to the platform, a non-slip base stops it from creeping, and anti-slip foot pads plant the frame on wood or tile. Come morning, the frame and support legs fold flat into a 31 x 13 x 44 in tower, the fasteners cinch it closed, and four wheels, two lockable and two directional, roll it back out of sight. The mattress cover is removable and machine washable, so the bed is always fresh for the next arrival.Assembly takes roughly 10 minutes with the included manual, making this an easy fit for apartments, dorms, home offices, and RVs, anywhere an extra bed is welcome but a permanent one is not.