Swaddle - allows your baby to sleep in a more natural sleeping position. It keeps your newborn baby's arms stable and calms his natural startle reflex while he sleeps. It has an ergonomic design that does not hinder leg movements. It can be turned into a sleeveless sleeping bag by opening the snaps on the sides. Usage: After placing the baby's legs and arms (with the arms remaining at the sides) in the swaddle, carefully pull up the zipper of the product. When the baby reaches the age where he can roll over on his own (approximately 2 months), the snaps on the sides can be opened and the arms can be taken out and used as a sleeping bag. CAUTION!: When your baby reaches the age where he can roll over on his own, use the product as a sleeping bag. Keep the product away from fire.