The sturdy twin over twin frame is made of solid wood and can be easily separated into two standalone beds when it's time to try a new layout. Both beds can come apart to be used as two separate pieces.Twin bed over a twin bed design with a built in ladder.Supports up to an 8 inch twin mattress on top bunk or floor level.Heavy duty solid pine slats eliminate the need for a Bunkie board.Designed for use with a mattress only, no box spring required.