Babysprouts Knotted Sleepers are made with soft, light-weight buttery soft bamboo jersey. With the most amazing stretch and comfort in this fabric, your baby will have the best night sleep. The bottom ties an allows for easy diaper changes in the middle of the night. Just untie the bottom knot and pull the gown up for diaper changes. The Sleeper also features mitten cuffs to wrap around your baby's fingers and a lap-neck style neckline for ease of taking the sleeper on and off during messy accidents. We suggest pulling the knotted sleeper down over their shoulders and body (instead of over their head).