For those who suffer from struggling heels. A foot file that is easy to grasp and can easily remove exfoliation. Can be washed completely and sanitary at any time. Since the sanding surface does not wear off with glass material, it can be used for a long time, and is economical. How to Use: 1. Please use with a slightly damp skin during bathing, after bathing, etc. 2. Place the silver sanding surface against the areas that are concerned about the keratin, and gently move it in a circular motion, then rub it. Please be careful not to shave too much. 3. The shaved exfoliates will come out. Effective in preventing foot odor by removing exfoliating that causes odors. Please use this product not only on the heel, but also at the base of your thumb. Spray the athlete nail smooth soles (sold separately) on areas of concern about the soles of your feet, and use it after blending it with a better effect.