WELL SELECTED SIZE - 9IN Ice bag, Cold Hot Reusable Cold Hot Bag, the right size for fast pain release, suitable for all body. SAFE, REUSABLE AND PORTABLE - Non-Toxic. Can be used for many times either cold or hot water. Product Weight is 3.6 Once, small size, portable, can be carried for trips to prevent unexpected sprain or pain. LEAK-PROOF - Excellent leak resistant cap, and waterproof design. Note: There is solidified water outside the ice pack, that is a normal physical phenomenon, not a pack leaking. USED AS A COLD PACK Easily add ice cube and a little water for your wonderful ice bag. Through restricting blood flow, the ice pack decreases swelling, reduces muscle spasms, quickly and importantly reduces pain. Cold therapy can be used for Sprain, Fever, Toothache, Headache, Bruises, Bumps and other sports injuries USED AS A HOT PACK For hot therapy, just add some hot water (not above 80 ) to improve symptoms in conditions such as Menstrual Pain, Breast Feeding Pain, Headaches / Migraines, Fibromyalgia, Cram