Two types of pads Ultra-Precision abrasive - It is a material that combines silicon carbide particles and nylon fibers. This material has an excellent polishing effect and can be used safely on the skin. Pad 1 - Areas with weak skin, such as hands, knees, elbows, etc. Pad 2 - Areas with a lot of dead skin cells such as heels and soles. Detachable -The product body and pad can be separated from each other. It can be used hygienically by washing after separation. It makes your feet smooth by removing only dead skin cells without damaging your skin.