Keep your baby safe and warm with the HALO SleepSack Swaddle. Used in hospital nurseries throughout North America, this wearable blanket with swaddle wrap fits comfortably over your child's sleepwear, replacing 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, which will ensure an easy and gentle transition to the SleepSack wearable blanket when it is time to stop swaddling. Its inverted zipper unzips from the bottom of the SleepSack, making diaper changes easy. 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.2-in-1 adjustable swaddle that allows for swaddling arms in or arms out.