The environmental toothbrush co medium if you are vegan and dont want to use our boar bristle wooden toothbrush then this bamboo handle toothbrush with natural polymer cellulose based bristles might be for you the best thing about these toothbrushes is that when they have served their purpose you can still shred them and put them in the compost or just throw them onto your open fire or into your woodburner the bristles burn and degrade quite quickly the head of the toothbrush is wrapped i