Medium bristle, natural and biodegradable bamboo toothbrush, for Adults Choose from 2 natural tones (Black and Bamboo) By f.e.t.e. (From Earth to Earth) Bamboo is the worlds fastest naturally renewing resource which is also inherently anti-microbial, anti-fungal and anti-bacterial. BPA-free, Partially Biodegradable Nylon bristles effectively clean. “Soft” and comfortable in your hand, as well as in your mouth. You and your children may not want to put them down.