The HALO SleepSack swaddle replaces loose blankets in the crib that can cover your baby’s face and interfere with breathing. In addition to helping your baby sleep safer, it helps him sleep better, too. Its adjustable swaddle wrap snuggles your baby's arms to prevent the "Moro" or startle reflex. It is the original 3-way adjustable swaddle that adjusts to your baby’s sleep style. Swaddle arms in, hands-to-face, one or both arms out to ensure baby’s best sleep and an easy and gentle transition to the SleepSack® wearable blanket when it is time to stop swaddling. Used in hospitals nationwide, the Halo SleepSack Swaddle is the #1 choice of hospitals and is recognized as "Hip Healthy" by the International Hip Dysplasia Institute. Its strong adjustable fasteners ensure a perfect fit and resist breakouts for more secure swaddling. A two-way zipper with tab covers at top and bottom allows your baby to stay swaddled for easy diaper changes and makes dressing easy. Use over regular sleepwear to take the place of loose blankets.