The Boo toothbrushes are round, smooth, and comfortable in the mouth. Made with 100% biodegradable Mao Bamboo handle and Nylon 4 bristles. (Vegan friendly). Our adult toothbrushes come with a colored medium bristle and matching colored handle in Eco-friendly paint. Available in 5 funky colors; there will be no mixing them up with the rest of the family. Toothbrushes are ordered in packs of 4 but are individually boxed for individual retail sales. Both single and 4 pack boxes have been beautifully illustrated.