The HALO® SleepSack® swaddle Quilted Muslin Platinum Series replaces loose blankets in the crib that can cover your baby’s face and interfere with breathing. The wearable blanket is quilted with soft, breathable, cotton muslin and a cotton jersey liningfor softness. The swaddle wrap is not quilted to avoid overheating. In addition to helping your baby sleep safer, it helps them sleep better, too. Its adjustable swaddle wrap snuggles your baby's arms to prevent the "Moro" or startle reflex. The Halo SleepSack swaddle 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. Discontinue swaddling when the baby shows signs of rolling over or breaking out of the swaddle wrap. TOG: 1.5. Size newborn fits 6-12 lbs, size small fits 13-18 lbs.