The Grabber Hand Warmers are air-activated hand warmers that will keep hands and fingers toasty for over 6+ hours. No shaking or kneading required, just open the packaging to start the process. Warmers are standard equipment for skiers, snowboarders, hunters, campers, hikers, birdwatchers or anyone who enjoys outdoor activities when the weather is cold. Warmers are widely used as portable, long-lasting heat therapy. All Grabber Hand and Toe Warmers are designed for a one-time, disposable use. Each package contains a pair of hand warmers and a pair of toe warmers.