Western shoe culture is 400 years old. Japan has only been around for about 70 years. Japanese people who grew up in tatami culture have not been able to adapt to the modern culture of wearing shoes to protect the health of their feet. In contrast to Europe and America, where insoles are increasingly being used by podiatrists, Japanese people's awareness of foot health is one of the lowest among developed countries. The feet are the foundation of the body. If the arch of your foot is collapsed, it will greatly affect your posture and the way you walk. In the long run, this can lead to problems with your feet, knees, and hips. By preventing arch deterioration, such as those caused by flat feet or bunions, the balance between the feet and body can be maintained, and the burden on the feet, knees, and hips can be reduced. Half insoles, which can be easily attached to a variety of shoes, are attracting attention from many quarters.