The twin over twin Sesame bunk bed is made of solid hardwood and offers 4 different kidsafe finishes. (Cherry, Rustic Grey, Dk. Chocolate and White). This RTA bunk is safe & sturdy and is not your average furniture store quality. Bunk will take up to 8" of mattress on the bottom and up to 7" of mattress on the top. Mattresses are not included in the price, although we do offer some very good options. Bunk will knock down into two twin beds as well. 5 year warranty.