“#1 Swaddle” New York Times: Rated America’s best baby swaddle, our Sleepea was designed by top pediatrician and the world’s leading swaddling expert, Dr. Harvey Karp. Perfect for healthy, growing hips (International Hip Dysplasia Institute seal of approval). | 100% Organic Cotton: Made from luxuriously soft organic cotton that is safe for babies. Includes extra-quiet Velcro for escape-proof security and 2-way zipper that opens from top or bottom for easy midnight nappy changes. | More Infant Sleep: Our baby swaddle sack prevents startles and boosts babies’ sleep quality with special inner flaps that give the snug embrace your baby boy or girl loved in the womb. Arm openings can unsnap to allow for arms out. Great transitional swaddle for arms free independent sleep training. | “5-Second Baby Swaddle”: The Happiest Baby Sleepea Swaddle is the easiest, safest, fastest, escape-proof baby swaddle sleep sack. It promotes self-soothing and keeps babies sleeping longer than other swaddle wraps. Breathable mesh at shoulders and legs to reduce risky overheating. | Sleepea is not for use in SNOO Smart Sleeper and would not prevent risky rolling. In SNOO, please only use a SNOO Sack.