Activation:
Remove plastic wrapper to expose the heat pack to air. The heat pack will require some time to start generating heat. Heat pack will generate heat for a minimum of 72 hours. Pack surface temperature may reach 130 °F. DO NOT open until ready for use. Heat pack does not work when wet. Do NOT use if the warmer is rigid. Warmer may stop working if temperature in box falls below freezing (32°F).
Caution:
Heat packs are not for human use and only meant for packing purposes. Avoid direct contact with heat pack to prevent injury from burning. DO NOT open inner pack. If the contents come in contact with skin, eyes or mouth, flush with cold water and contact a physician.
Ingredients: Iron Powder, Activated Charcoal, Water, Vermiculite, Salt.