Super Warmers are rectangular shaped, single-use, air-activated heat packs that are larger and last longer than standard heat packs. They provide up to 18 hours of continuous heat for your hands and body. When to use Super Warmers? Hunting & Fishing Camping & Hiking Skiing Yard Work Shopping Working Outside Super Warmers Features: Up to 18 Hours of Heat Super Warmer is larger and longer lasting! Ready to use, air activated, natural heat, contains one warmer per pack. Made in the USA. How do Warmers work? contain ingredients such as iron, activated carbon, and water. Once these ingredients come into contact with oxygen in the air, the ingredients oxidize and produce heat. The combination of ingredients has been specially formulated to ensure consistent, comforting heat for a wide variety of uses.

HotHands Extra Large 18 Hour Super Hand and Body Warmer - 40 Pack Case