This is a much needed accessory and will needed to changed often so stock up--the price is right. Made of 100% pure cotton combed for extra softness against baby's delicate skin. The hat and booties help add warmth and maintain baby's body temperature so baby can conserve strength to grow instead of just trying to stay warm. The booties have ribbed cuffs for a snug fit. They are easy care machine washable and made for preemies that are 3 to 5 pounds.