The JPMA Approved Bridgeport Convertible 4 in 1 Crib is made with beautiful white wood. It has a 4-Position Mattress Support and a Huge Trundle Drawer for under crib storage. It has full covered casters and front casters have a locking switch. Crib converts easily to a Toddler Bed (comes with Toddler Rail) then to a Day Bed, and finally a Full Size Bed. The Crib Headboard is used as the Full Size Bed Headboard, and the Crib Front is used as the Full Size Bed's Foot Board.