gel hot pack,heat pad,heat pack Main use: 1. Thisheat pack can be used for all body parts. 2. The saltiness helps to relieve pain and inflammation. 3. Good for many joint problems, such as, Rheumatism, Arthritis, muscular pain, stress, insomnia and menstrual pain. 4. Used for sports player's injury and rehabilitation. 5. Used for children's growing pains. how to recharge: 1. Bring a pot of water to a rapid boil. 2. Gently bend or fold hardned pack to fit in pot. 3. Wrap hardened pack in cloth and place in the boiling water. 4. Boil for 15 minutes (SUPER Size) 10 minutes (SMALL Size) 5. Do not cut boiling time short or allow pot to boil dry. 6. Remove pack from water and allow to cool for later use. Pack can be activated only after it has cooled completely. k