Use to reduce inflammation and swelling by lowering skin temperature Helps relieve pain by numbing injured tissues and reducing muscle spasms Ideal for sprains strains contusions minor burns toothaches simple headaches insect bites and many other first aid needs With a simple shake and squeeze of the compress to break the inner pouch the harmless chemicals mix and the contents become cold immediately Remains cold for 15 - 40 minutes achieving a low temperature of 25°F Single use cold aplication without the mess of ice cubes