The 4-in-1 crib converts to a toddler bed, daybed and full-size bed and offers three mattress positions to suit your child’s changing needs. Made from sturdy poplar wood, the crib is built to last and grow with your child. Converts from crib to toddler bed with the Berkley Toddler Guard Rail (sold separately). Can also convert to a daybed and full size bed with the Berkley Full Size Bed Rails (sold separately). The toddler rail (Item# 148) and adult rails (Item# 221) sold separately. 1 year limited manufacturer's warranty. Meets ASTM standards