Formin is an insole, developed by Calzeria Hosono, who has been in making shoes for over 40 years. Many people feel discomfort with the pre-molded insole that is made to order is expensive, and time consuming. In order to provide you a better wearing experience, Formins was created after years of trial and error. Features: The parts of the body weight are moderately sinking into the shape of your shoes and feet, creating a high fit and preventing slippage. Vegetable tanned cowhide leather with pinhole processing is highly absorbent and breathable, allowing you to wear it comfortably for a long time. The thin toe portion prevents pressure on your fingertips, so it can be used with both leather and sneakers. Experience the comfort of a custom made insole This product is a 0.04 inch (1 mm) thick cork. Recommended for those who have a little room in their shoes. For those who have large room to wear, we recommend the cork thickness 0.08 inch (2 mm) type and the kato part 0.04 inch (1 mm) type. Outer Material: Cowhide leather; Lining Material: Resin, Natural Cork