About this item Polyseter Spandex Imported Warm and comfortable a gloves that can heat up to prevent cold from the hand frostbite Built-in far-infrared graphene heating sheet, heating of far-infrared heating sheet Far infrared rays penetrate the skin and warm the hand Three-speed temperature control to adjust the temperature control at will, one key to turn on, have warm happiness anytime, anywhere Red high temperature 50℃ blue medium temperature 45℃ green low temperature 40℃