... : 68°CHeating time :8 -12 hoursSafety and no pollutionNatural raw materialScientific prescription. No stimulus to ... skin.Heating simple, No need outside energy, plug, hot waterUltra thin ultra light, easy to ... the human body's shoulder, back, waist and stomach and related joint parts.After use, take off ... prescription. No stimulus to skin. And also have other special shape, e.g. the Warmer Pad for ...