Baby Swaddleup, Sleeping Bag, Swaddle me, Newborn,I Infant, Anti-Frightened Jumping Sleeping SwaddleUp, 100% cotton Swaddle Size: M, L, XL Material: 100% cotton Age: New born, 1. The first and second stages 2. A close-fitting feeling let your baby feels like being in the mother s womb. 3. Swaddle sleeves and wings prevent the baby's face from being scratched 4. Perfect dual-use zipper for easy diaper changing 5. The shape of the buttocks makes the baby's buttocks and legs naturally bend, allowing the baby to grow healthy 6. ArmsUp can make your baby have more natural sleep 7. 100% cotton material, make the baby feel very comfortable