Bio degradable and totally compostable the Jack n Jill Bio Toothbrush with its ergonomic handle is made from 100% corn starch with soft round nylon bristles. The cute koala handle will make it easy for your toddler to recognise their toothbrush when its time to brush. Use with Jack n Jill all natural Toothpaste for great oral hygiene. Important: It is recommended that your child's toothbrush is changed approximately every 8 weeks