Ready-to-use and easy to activate for emergency use whenever cold therapy is required. Reaches 0°C (32°F) within seconds and remains below 5°C (41°F) for up to 10 minutes. Features a double bag construction for added quality and longer shelf life. For sprains, strains, dislocations, swelling, bumps and bruising, minor burns, headaches, migraine and tension relief, muscle aches and spasms, cramps, toothaches, insect bites and stings and sinus congestion. Ideal for sporting activities, industry, health clubs, schools, automobiles, first aid kits, homes and cottages.