The L A Baby Brentwood 4 in 1 convertible crib is a beautifully styled contemporary model that converts from a baby crib (mattress sold separately) to a toddler bed (toddler guardrail kit included), day bed, and later to a full-size bed (full size conversion kit sold separately) The fixed sides and solid back panel insure stability, allowing this crib to meet Federal Safety Standards. This crib also features hidden hardware, three levels of mattress adjustment and each part of the crib is carefully sanded and finished to insure many years of quality service. Unlike many other cribs on the market, this crib is made from select Birch hardwoods. Child should transition out of the crib when they start trying to climb out or reach a height of 35 inches.