Love To Dream Baby Sleep Sack, Swaddle UP Self-Soothing Swaddles for Newborns Sleep never felt this snug and safe with our Swaddle UP Self-Soothing Sleep Sack. Our ""Arms UP"" baby sleep sack, also known as a swaddle or wearable blanket, is designed to allow baby's arms to be positioned upward and close to their face while they sleep. This unique sleep sack offers several benefits for both babies and parents. Baby's Natural Self-Soothing Sleep Position Babies are more comfortable with their arms near their face, as this mimics the fetal position they were accustomed to in the womb. Allowing their arms to be up can enhance their sense of security and comfort during sleep. The ability for babies to self-soothe by touching their face or sucking on their fingers can be comforting. An arms-up sleep sack facilitates this natural soothing mechanism, promoting better sleep for baby. Babies have a startle reflex, also known as the Moro reflex, which can sometimes wake them up. Swaddling with arms up can help reduce this reflex, preventing unnecessary disturbances to their sleep. Easy to Use, Hip-Friendly Design Our sleep sacks are designed to provide ample room for the baby's legs and hips to move naturally, allowing for healthy hip development. The clever two-way zipper mechanism means quick and easy diaper changes for any parent, grandparent or carer, even in the middle of the night. Our newborn sleep sacks meets safety standards, provide the proper fit, and are made from breathable materials (93% Cotton, 7% Elastane) suitable for your baby's sleep environment. From the unique, award-winning Swaddle Up, to bedding and Self-Soothing Toys, the Love to Dream range has grown to provide a portfolio of sleep solutions designed for children up to four years old."