KindleCook-Flameless Heating System for Heating MREs, Dehydrated Foods, or Fresh Foods Flameless Cooking System for MREs, Dehydrated Food, or Fresh Food No Liquid Fuel Needed, No Matches Needed - Simply Add Water and It Heats Your Meal Contains 2 Max Heat Packs - Additional Max Heat Packs Sold Separately Can Be Used to Store Other Gear When Not In Use, Such As First Aid Supplies Can Be Used Indoors or Tents- The Only Vapor It Gives Off is Water Vapor