Lindo double sided foot file uses a gentle diamond texture that has fine cells to safely remove excess calluses and keep feet feeling smooth and soft. Use the courser side of the foot file for rougher areas of skin and finer side of the file for gentle filing. This product included a removable mini file allows for ease of filing in difficult to reach areas of the feet. *instruction: wash thoroughly with warm water and soap after each use. Allow for the foot file to dry completely before storing. For personal use only, do not share with others.