Don't worry about your hands getting cold in chilly weather anymore. The Grabber Hand Warmers will keep your hands toasty with their long lasting and effective heat. These are ideal for cold days hiking around the Bishop backcountry, night sessions at the Happy Boulders, or just hanging around camp. These hand warmers are air-activated and do not require shaking or kneading. Simply open them up, stick them in your pocket, and you will have a portable source of heat in minutes.