The newborn baby surrender swaddle summer spring anti-startle sleep sack is a secure sleep companion designed for newborns. Made of soft and breathable materials, it ensures that the baby stays comfortable and warm during spring and autumn, while effectively preventing the startle reflex. The unique surrender design gives the baby a sense of security and containment, which helps to improve sleep quality. Easy-to-use magic stickers and zippers make it easy for parents to put on and take off for the baby. Whether at home or outdoors, this sleep sack is an ideal choice for babies to sleep soundly. Make every night more peaceful.