This one-size-fits-all (OSFA) birth to potty nappy means 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 3.5-6.5kgs, Medium 7-11kgs, or Large 12-15kgs. Outter is PUL (polyurethane laminate), a soft, waterproof, breathable and stretchable fabric. The inner lining, made from Polyester mesh.