The Kinetic Vest is no ordinary vest, it uses the innovative Klymit NobleTek, a type of insulating technology that uses argon gas to keep your body warm. (Photos)
The vest features chambers that inflate with a small tank(included), trapping the heat inside your clothes, basically like double-paned windows insulate a building´s interior. The vest after inflated remains ultralight and provides the same insulation as traditional heating fibers that are three times as thick. It’s like having your personal A/C thermostat.
Via Technology Blog