The Transitional Swaddle Sack is designed to help babies transition from a traditional swaddle to a wearable blanket. It features arms up half-length sleeves and foldover mitten cuffs that can be worn open or closed, allowing babies to self-soothe or protect them from facial scratches. The snug fitting and hip-healthy design supports the baby in a natural position, promoting better and safer sleep. Made from 100% soft, stretchy cotton knit with a 0.7 TOG rating, it includes a 2-way zipper for easy diaper changes. Ideal for babies who prefer to sleep with arms up, are starting to roll over, or can break out of a traditional swaddle.