HotHands warmers are single use air-activated heat packs that provide everyday warmth and are ideal for keeping your body warm when the temperature gets cold. They provide safe, natural heat, so you can enjoy the great outdoors during those harsh winter months. Donât hesitate to cheer on your favorite team this season, beat the cold with Hot Hands. Convenient, Compact, Portable. Thoughtfully designed so you can enjoy HotHands anytime, anywhere.