The Hot Pack Flameless Ration Heater can be used to heat our wet meals as an alternative to using a lightweight camping stove. This food heater pack is trusted by the military and emergency services worldwide as simple, effective, and lightweight outdoor cooking equipment for preparing meals outdoors. How to Use Simply pour a small amount of water into the heater pouch (around 45ml), insert your unopened meal pouch, fold the top over, and slide it into a box, envelope, or similar container. The pack's non-corrosive chemical pad will react with the water to generate heat, warming the meal in around 12 minutes. Full instructions can be found printed on the pack. Features: Odourless, flameless, and non-toxic – Safe for tactical use as it produces no visible flame or smoke Designed to fit most wet food pouches Compact and lightweight Ideal for fieldcraft, outdoor expeditions, survival kits, and more Safety The heater pad contains a water-activated exothermic (heat-producing) chemical mix. This reacts vigorously with water and releases hydrogen gas, which can cause burns. Avoid skin/eye contact and only use as instructed, in a ventilated area.