Instant re-usable heat wherever you go. The Heat Solution® patented technology eliminates the need for electrical cords; just safe moist heat on command. The pack will conform to any area of the body where you need warmth and relief. Provides soothing heat up to 130°F in just 5 seconds and lasts for up to 45 minutes. Portability makes this the excellent choice for instant heat at home or on the go. It's ideal for providing therapeutic heat to treat sports injuries, sore muscles or sinus aches.