The Bamboo toothbrush is the environmentally conscious choice for your household. This toothbrush has a biodegradable handle made from 100% bamboo. The toothbrush comes in a biodegradable box made from paper. Your Bamboo toothbrush can be used for just as long as a conventional plastic toothbrush. It has a natural feel for your hand and mouth. Bristles are verified free of BPA. Bristles are made from nylon. Not biodegradable but may be recycled. Nylon is used because there is no available plant-based option that would allow you to use your toothbrush for 2-4 months. The only biodegradable option is Boar/Pig hair, which we do not use.