Children's Bamboo Bamboo Toothbrush Yellow. Our beautiful brushes are sustainable, BPA-free, organic and vegan friendly product, with 100% recyclable with zero waste packaging. Our bristles are Nylon 4. Remove them and place them into the recycling when you're finished with the brush, the rest is biodegradable. This means you can compost your handle. Children's brushes are much smaller in the body/handle and the head of the brush, perfect for smaller hands and mouths.