Grabber mega warmer is a portable everyday heat source you can take anywhere. Just open the package and within minutes the mega warmer will keep you warm for over 12 hours. Its dry clean odorless non-toxic and non-flammable. When the mega warmer has done its job just throw it away. Great for pockets in a Grabber sleeping bag pouch or as refills for any Grabber cozy muff or Grabber stadium seat. If you suffer from cold sore joints and muscles as a result of Arthritis Raynaud s Lupus Scleroderma Sjogren s Myalgia or just poor circulation Grabber warmers provide soothing warmth. 10 counts provide extra long-lasting heat of 12+ hours. Some people may experience increased sensitivity to the high temperatures or they may have difficulty determining when the warmer is too hot. These products are safe to handle and use as long as you apply them properly. Depending on your needs there is a Grabber warmer for you. Warmers operate on a chemical reaction with air similar to rusting.