We are 23 years of medical and health care products manufacturer with ISO13485 Natural stone with mineral substance/wood/EVA 1) Improve circulation system and neural system by massaging your feet. 2) Remove toxin and keep fit3) Stimulates, adjusts the function of entrails, strengthens immunity of human body, just wear 5-15 munites subject to your feeling.4) Helps to reduce sweat5) Size 35-46 for ...