This one-size-fits-all birth to potty nappy fits from 3.5 to 18 kg, meaning there is no need to buy different sizes as the baby grows
There are side snaps on both sides to adjust the size. The front two rows of snaps adjusts to: small 3.5 to 6.5 kg, medium 7 to 11 kg, or large 12 to 18 kg. The outer layer is a soft, waterproof, breathable and stretchy fabric. The inner lining is a polyester mesh, which catches any solids. No inserts are required inside as the swim nappy is designed to contain solids only and not the wee.