Brush with Bamboo’s Family 4-pack includes 2 adult toothbrushes and 2 kids toothbrushes. Our bamboo toothbrush is the environmentally conscious choice for your household. This toothbrush has a biodegradable handle made from 100% bamboo. The soft bristles made from 100% Castor Bean Oil, USDA Certified 100% Biobased and are made in Germany. The bamboo toothbrush comes in a biodegradable box made from paper. The inside wrapper is made from plants and is compostable in city and commercial facilities (ASTM D6400 compliant, learn more in the FAQ section). Your bamboo toothbrushes can be used for just as long as plastic toothbrushes.