2-in-1 adjustable swaddle allows for swaddling arms in or arms out ensuring an easy transition to the SleepSack wearable blanket when it is time to stop swaddling. Use over regular sleepwear to take the place of loose blankets. Discontinue swaddling when the baby shows signs of rolling over or breaking out of the swaddle wrap. Recognized as "Hip Healthy" by the International Hip Dysplasia Institute. 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 immobilizes your baby's arms to prevent the 'Moro' or startle reflex. And, it is the only 2-in-1 adjustable swaddle that allows for swaddling arms in or arms out for baby's comfort and to ensure an easy and gentle transition to the SleepSack wearable blanket when it is time to stop swaddling. Used in hospital nurseries nationwide, the Halo SleepSack Swaddle is the #1 choice of hospital nurseries and is recognized as 'Hip Healthy' by the International Hip Dysplasia Institute. Halo also proudly supports non-profit organizations like First Candle/SIDS Alliance. Use over regular sleepwear to take the place of loose blankets. Discontinue swaddling when the baby shows signs of rolling over or breaking out of the swaddle wrap. 100% polyester micro fleece. Expanded assortment available online. This product is not available in our stores.