Bambioo are a small company based in Devon producing a natural bamboo toothbrush, from sustainably grown bamboo. The bristles are made of decompostable fibres meaning the whole toothbrush is biologically degradable. Nylon 4 is a BPA and phthalate free, naturally biodegradable polyamide and is widely considered as one of the most tolerable plastics from a health point of view. The handle is made from bamboo, Nylon 4 is used in the bristles. The packaging is also compostable - brown paper and cardboard.