10-pack. Portable heat in the palm of your hand. Air-activated Heat Treat warmers keep hands and fingers toasty for over 7 hours. No shaking or kneading required: Just open the package and put the original warmers in your glove or pocket for a few minutes to start the process. Hand warmers are standard equipment for skiers, snowboarders, hunters, campers, hikers, birdwatchers, or anyone who enjoys outdoor activities when the weather is cold. Hand warmers are widely used as portable, long-lasting heat therapy. If you suffer from cold, sore hands, and fingers as a result of arthritis, Raynaud's, lupis, sclerderma, Sjogrens, myalgia, or just poor circulation, Heat Treat provides soothing warmth. 10 packages per bag. 2 warmers per package. All Heat Treat warmers are designed for 1 time, disposable use.