HotHands Adhesive Toe Warmers provide warmth and comfort for your feet when you spend time in frigid climates. They are single-use air-activated heat packs that warm up quickly and last for as long as eight hours. Useful as camping and hunting accessories as well as for when you're shoveling snow or engaged in other activities, the warmers also have an adhesive to hold them securely in place. They feature an ultra-thin design and rounded shape that leaves room for socks and feet and offers optimal comfort in both boots and shoes. Activated charcoal on the inside absorbs and reduces odors.