Four-in-one foot file. Dimensions: 20x5x2.6cm. One side is made of pumice stone, featuring a finely porous surface for smoothening the skin of the feet. One side consists of synthetic fibers for cleaning the skin. Another side is made of stainless steel, designed to remove calluses and cleanse thicker, harder skin on the feet. The final side is coated with sandpaper, providing gentle abrasion for rough skin. This tool offers four distinct functions, and when used in a reasonable combination, it effectively cleanses foot skin.