The JACK N’ JILL Biodegradable Children's Toothbrush is an environmentally friendly toothbrush, composed of 100% corn starch. The nylon bristles on the brush are well-rounded and soft that allow easy and thorough cleaning. The Koala toothbrush is from their biodegradable collection, suitable for toddlers. The brush can be disposed of by breaking the toothbrush’s head and adding it to compost. The brush is estimated to take 90 days to fully decompose and becomes harmless to the environment.