The bambino mioliners are now even friendlier on the environment made from 100 natural material they are compostable when wet flushable when soiled and biodegradable the mioliners are made from cornstarch which is an annually renewable sustainable source the bambino mio nappy liners retain solids to help prevent soiling of the nappy and also reduce moisture seeping back onto babys skin features biodegradable 100 natural retain solids to help prevent soiling of the nappy