Scientific neck protection: The neck Velcro design allows mothers to flexibly adjust according to the size of the baby's head, closely fitting the neck curve, caring for the immature cervical spine, and helping healthy development.Prevent head deviation: Fit the head structure, evenly distribute pressure, reduce long-term unilateral pressure, effectively prevent head deflection and flat head, and help the baby sleep with a beautiful head shape.Soft and skin-friendly: Soft and delicate, good breathability, gently care for the baby's delicate skin, reduce stuffiness and discomfort.Convenient adjustment: The Velcro is easy to operate, and the mother can easily adjust it with one hand, adapting to the baby's growth and changes at any time, and it is super convenient to use.Safe and durable: Environmentally friendly, formaldehyde-free materials, strong and durable, accompany the baby to sleep peacefully for a long time.