Foot Warmers S/M - Grabber Foot Warmers are the perfect everyday solution for cold feet. They are designed to function in the low oxygen environment of boots and shoes. Simply stick the Warmers inside your boots or shoes, and enjoy more than 5 hours of warmth. 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 for portable, long-lasting heat therapy. If you suffer from cold, sore feet and toes as a result of Arthritis, Raynaud"s, Lupus, Scleroderma, Sjögren"s, Myalgia or just poor circulation, Grabber Warmers provide soothing warmth. Grabber Foot Warmers 30 pairs/box, S/M: * 30 Pairs per Box * TWES (1 package contains a pair) * Grabber Warmers Measurements: 3" x 4" * Duration: 6+ hours * Avg Temp: 95F