For softer feet, try this callus remover from Canal. With four different sanding services, it thoroughly removes annoying calluses Side coating for hard-to-reach areas White polishing circle for ultra-smooth skin Waterproof and washable Made from FSC-certified wood 29 cm How to use:Use the fine, coarse or side coating to gently file over hardened areas of the feet. For the perfect finish and ultra-smooth skin, polish the areas smooth with the white circle. Clean the file under running water and dry briefly.