Kao Megurism Steam Pain Relief Body Sheet contains iron heater which will be acidified when expose to the air, steam will be produced in the evaporation. And simply stick in on the affected area, e.g. neck, back or your tummy or wherever you would feel painful. Kao Megurism Steam Pain Relief Body Sheet helps to promote blood circulation and release the stressful. An ultra-thin design which can also be used when going out.