Zipper along bottom for easy diaper changes. Roomy design allows for healthy development of hips. Adjustable tabs for a perfect fit that grows with baby. 100% Cotton Machine wash cold. Tumble dry low Swaddling is a great way to help your little sleep more safely + soundly. (Yes please!) The aden + anais Easy Swaddle Wrap makes swaddling a breeze. Adjustable velcro fasteners wrap securely around your baby, creating a snug, womb-like feeling, and helping to prevent the natural startle reflex. With Easy Swaddle Wrap, you can swaddle them two ways; arms-in or arms-out, depending on their sleep preference. Enchant baby with the magical world of Harry Potter, charmed with quintessential imagery from Hogwarts and beyond.