Front & Wings - 100% Cotton; Back - 93% Cotton, 7% Elastane Easy swaddle transitions with the SwaddleMe by Ingenuity Arms Free Convertible Swaddle fits babies ages 3-6 months, 14-18 pounds, and up to 30 inches long Give baby the flexibility of both arms in or out while creating a womb-like feeling thanks to this adjustable swaddle blanket Keep baby snug and secure with the soft hook-and-loop closures on the adjustable wrap, with a large zipper opening making it easier to get in and out of This soft and cozy swaddle is made of durable natural fiber and is machine washable with a snug fit helps prevent the startle reflex; Oeko-Tex certified The SwaddleMe by Ingenuity Arms Free Convertible Swaddle is part of Stage 2 in the SwaddleMe Stages of Healthy Sleep, made for babies who are learning to roll and self-soothe