The handle of the toothbrush is made of a material that is a blend of polylactic acid resin and fine bamboo powder, which burns fewer calories when incinerated after use, and emits less CO2 than ordinary resin. In addition, it is a sustainable toothbrush because it uses plant materials that grow in one year. The bamboo grown in Iga City, Mie Prefecture is managed in-house, and all of it is carefully made at a factory in Japan. In addition, due to the characteristics of natural materials, the handle part decomposes and loses strength, so we have set an industry-first quality retention period of 2 years. 【About Hanamage】 It is moderately soft, and the bristles wear out when brushed, so it is a material that does not easily damage tooth enamel and gums. Each one is bent and characterized by a gentle polishing feel. * Since it is a natural material, there may be hair loss and breakage.