Water Resistant Polyester TPU Newborn / Preemie Cover = 3 Sizes in One! The Rumparooz Newborn / Preemie Diaper Covers have 3 adjustable rise settings that are designed to fit your tiny baby from 4 - 15 lbs. Covers may be used several times before needing to be washed. Aplix Closure Rumparooz Lil Joey Newborn Cover with Aplix Use Rumparooz Covers overfitted cloth diapersprefolds or with a lay-in natural fiber soaker to obtain a waterproofcloth diaper set-up. The waterproof material is made from Biodegradable TPU. Thiscloth diaper coverfromRumparoozfeatures: - One Size that ranges from 4-12 lbs - Rise adjusts to 3 snap-able settings - Made responsibly in Chinaunder Swiss Certificateby a Danish Mom-Owned Company - Outer leg gusseted