The Zippy Swaddle puts baby in the mood to snuggle up and snooze. Provides the same cozy embrace they loved in the womb Prevents wild hand movements that can startle baby awake Designed based on safe sleep recommendations from the American Academy of Pediatrics (AAP) Intended for use during naps and bedtime in a safe sleep environment Do not use once your baby starts to show signs of rolling over Fabric100% Cotton TOG Rating0.5