• Adaptable adhesive heat patch for versatile use. • Provides therapeutic heat that relaxes muscles and relieves pain. • Heats up upon opening the package. • Leaves no adhesive residue. • Offers 8 hours of consistent heat. • Recommended for athletes and people with physical exertion. • Relieves muscle and joint pain associated with fatigue and tension. • Contains no medication. • Do not use on certain areas of the body. • Keep out of reach of children and animals. • Each thermal cell contains iron. • Do not heat in microwave. • Check skin periodically during use.