• Adhesive heat patch ideal for neck, shoulder, and wrist pain. • Heat cells provide therapeutic warmth that relaxes muscles. • Increases blood flow and relieves muscle and/or joint pain. • Heat patches self-heat a few minutes after opening the package. • Provides up to 8 hours of constant therapeutic heat while in use. • 8 more hours of pain relief once the patch is removed. • Recommended for people who play sports or engage in physical activities. • Contains no medication. • Do not use if you observe heat cells with content leakage. • Single use only. • Attention: Each heat cell contains iron. • Do not heat in microwave or attempt to reheat by other means. • Periodically check the skin while using ThermaCare. • Discontinue use if you notice discomfort, burning, or skin changes.