This Happiest Baby SNOO Sleep Sack is more than just a swaddle—it's a scientifically backed tool for better infant sleep. Designed by Dr. Harvey Karp, the world's leading expert on hip-safe swaddling, this product supports healthy hip development while giving your baby the comfort and security they loved in the womb. The 100% organic cotton fabric is gentle on delicate skin, and the special wings keep your baby safely on their back. The breathable mesh at the shoulders and legs helps keep your little one cool and reduces the risk of overheating. Plus, the 2-way zipper makes for easy nighttime nappy changes, ensuring convenience for parents.
  Perfect for parents who want to ensure their baby sleeps soundly and safely, the SNOO Sleep Sack is designed to prevent startles and promote longer, uninterrupted sleep. Its unique arm openings allow for easy adjustment, making it an ideal transition from swaddling to crib use. Whether you're using it with the SNOO Smart Sleeper or just as a regular swaddle, this breathable, escape-proof cover offers comfort, security, and ease of use. It's the easiest, safest, and fastest way to help your baby sleep like a baby. Loved by parents and endorsed by experts, the SNOO Sleep Sack is a must-have for peaceful night sleep.