The Rumparooz Newborn Cloth Diaper Cover is designed to grow with your baby by featuring three adjustable size settings that fit your newborn or preemie through the early months. The weight range for the newborn cover starts at a small 4 pounds and will fit up to approximately 15 pounds. The Rumparooz Newborn Cover is designed to fit over any type of diapering system that requires a waterproof cover such as Ecoposh OBV Cloth Diapers, prefolds, and flats. The Rumparooz Newborn Cover may be wiped dry between uses and used multiple times until being placed into the laundry at the end of the day or when becoming soiled. The Rumparooz Newborn Cloth Diaper Covers are made of waterproof polyester TPU that comes in a variety of fun colors and fashionable prints.