Swaddling cum sleep blanket baby sac is 100% Cotton based swaddle that not only helps your baby sleep safer & better but also helps them transitioning to the sleep pack when they start rolling over. Swaddle sleep baby sac is perfect for babies and easily adjusts to growing babies. It’s easy and safe way to swaddle which also prevents them from scratching their soft beautiful tiny face. For Swaddling: Put your baby inside the sleep sac, secure the zipper from top to bottom. Let the baby adjust in his natural sleep position and wrap your baby’s arms comfortably. Once your baby is sung fit, he will sleep peacefully as this Swaddle sleep sac will prevent waking him up from the “Moro” or startle reflex. The Large sack design gives baby plenty of space to flex and move his legs for proper hip development. For Swaddle transitioning: When Baby shows signs of rolling over then discontinue using the fastener belt and continue using the sleep sac. The star shape enclosure ensures baby’s best sleep by providing them freedom to roll and use their arms, hands and legs safely with a feeling of slight resistance that they enjoy in the swaddle and the womb.