Walking Teacher Insole Size: M (23.0cm - 23.5cm) Authentic product themed around the "pelvis," the key to health and beauty, developed with an academic approach. Walking correction insole co-developed with Hiroshima University. A thin insole that you simply place in your favorite shoes. The special gel lines naturally guide the "weight transfer of the sole" from: heel → outside of the arch → between the big toe and index finger. The 6° angled gel material at the toes encourages grip of the toes. Unconsciously guides ideal weight transfer and toe grip, achieving a firm push-off! Even sneakers and flat shoes, which tend to make walking easier, can achieve ideal walking with the walking guide. Heel pumps also have gel grip that prevents slipping forward and provides stable walking. Even leather shoes, which can be uncomfortable because the foot is fixed, quickly transform into comfortable walking shoes with the walking guide and air support. Walking Running Walking Teacher Insole Slim Hiroshima University Joint Research Insole Also have 2 pairs of L size.