It is a toothbrush with a popular design that is relatively easy for anyone to hold and brush. The tip of the head reaches the back teeth and can be brushed firmly. The handle of a toothbrush burns fewer calories when incinerated after use, and emits less CO2 than ordinary resin. It is a sustainable toothbrush because it is made of a material that is a blend of polylactic acid resin and fine bamboo powder, and 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. Due to the characteristics of natural materials, the handle part decomposes and loses strength, so we have set the industry's first quality retention period of two years. [About pig hair] The notation is "hard", but when it contains water, it becomes moderately soft. As you use it, the bristles wear out, so it is a material that does not easily damage tooth enamel and gums. It is a random thickness bristle unique to natural origin, and it also removes plaque on the surface of the teeth and between the teeth.