Your child can sleep soundly in this gorgeous Astor 5n1 Crib from Delta from infancy through adolescence During the baby years an adjustable five-position stabilizer bar which allows you to place the mattress board at the correct height for your babys age Keep it in the highest position for an infant so its easy to lay him down and pick him up Lower the mattress as your baby grows to prevent him from climbing out When the time comes the crib transforms into a toddler bed with a conversion safety rail making the move from crib to big-kid bed less stressful And when its time for a real bed the cribs back rail can be removed and used as a headboard for a twin size bed