By using a bamboo toothbrush, we want them to be familiar with environmentally friendly options from a young age. And because it is something you eat every day, I want you to choose safe and secure materials. This bamboo toothbrush was developed in response to the desire to take care of both health and the global environment. We also received feedback that it was the size that fits children's small mouths and hands, so we developed it. Completely organic manufacturing method that is safe and secure for children to use (no preservatives or bleach). Produced from plant-derived castor oil. BPA-free and friendly to the human body Contributing to the reduction of CO2 that causes global warming and the reduction of fossil resource consumption Made of high-quality, easy-to-polish nylon 610 Small head that fits the oral size of Japanese people Easy to polish