The Westwood Kingston convertible crib is designed to a scale that is equally comfortable in a nursery or a teen room. The convertible crib reflects a new sense of proportion and grace. The easily adjustable mattress height features three different height positions and converts from a toddler bed to a full-sized bed. Conversion rails and mattress sold separately. Westwood"s Always There Hardware (ATH) is preinstalled at the factory and is permanently secured within the crib. Because Always There Hardware is preinstalled, it prevents loss of hardware when the crib is disassembled or converted to a bed and subsequently back to a crib for a second child. It also makes crib assembly easy.