The Dream On Me 3-in-1 Folding Portable Crib is the only 3-level portable crib available. The patented rail design easily converts the crib to a changing station or playpen in seconds. Easy to assemble it features one-hand folding for flat compact storage. Features include a stationary (non-drop side) rail system that provides the utmost in product safety and dual hooded locking wheels. Made of birch wood it s available in six finishes. A Dream On Me mattress pad and all tools for easy assembly are included. It meets the CPSC and ASTM standard.