Bamboo toothbrushes for adults. The shape of the bristle has an upward curve to better reach molars. The handle of the toothbrush is 100% compostable and biodegradable. It is made of bamboo. The bristles of the ola bamboo toothbrush are made of high quality nylon for better brushing. The toothbrush head is compact to ensure proper brushing of the molars.