Every part of Brush with Bamboo’s Adult toothbrush is plant-based: bristles, handle, wrapper, and box. Pack of 2 Adult Toothbrush. Soft bristles are made from a base of castor bean oil. Bristles made in the USA. The handle is made from Certified 100% Organic Bamboo (certified by CERES of Germany). The wrapper around the toothbrush is plant-based and compostable. The box encasing the toothbrush is made from paper – no tape or glue is used. Your bamboo toothbrushes can be used for just as long as plastic toothbrushes. USDA Certified Biobased. Green American Certified. Certified Organic Bamboo. Vegan. BPA-Free. Natural and Non-toxic.