Original swaddle transition product designed to help your baby transition from swaddling Promotes good sleep habits essential for growth and development Provides peace of mind for parents knowing their baby is getting adequate rest Safe and recommended design for back sleeping in the crib at the proper room temperature Features a soft and breathable jersey cotton inner layer for supreme comfort Includes a soft cotton outer layer and a layer of polyfil for added comfort Easy diaper changes with a double zipper design for convenient in/out access Machine washable for easy care; tumble dry low or hang to dry, do not iron Outer layer : 100% Cotton, Inner layer : 100% Cotton, Fill 100% Polyester.