Solid Pine Wood. Great for child’s room. Dimensions– 80 1/2″L x 43″W x 40″ high. This bed accommodates two standard twin size mattresses (39″x74″). Some assembly required–hardware and instructions included. This listing is for bed with trundle only. Comes mattress ready with slat kit. Mattresses and bedding are not included. Set includes: (1) Head Board (1) Foot Board (2) Side Rails (13) Slats (1) Trundle