These headpieces are designed to fit into Born Copenhagen Babynests. Instead of using a regular muslin cloth to keep from washing the babynest or the bed sheet all the time when the baby spills, we have designed this headpiece which is both water repellent and has a waterproof membrane. Protecting the baby nests or little beds from little accidents that are inevitable with a newborn baby. Made from 100% certified organic cotton. Inner membrane of 100% polyester to keep liquids from going through.