Heaitng pads:1. OEM available 2. 48-53 degree ... easily removed easily, will never dirty your clothesIntroduction:Heating material is a mixture made up of iron, ... activated carbon, mineral salt and water. When heating material contact the oxygen in the air, it ... no pollutionNatural raw materialScientific prescription. No stimulus to skin.Heating simple, No need outside energy, plug, hot waterUltra ...