Key Information: ‣ Size: 11cm x 15cm ‣ Uses: This Enokon Far Infrared Pain Relief Heat Patch provides extensive and sustained heat therapy for muscular and joint pain relief, suitable for large areas. ‣ Directions: Apply directly to the area in pain. The self-heating technology offers prolonged therapeutic warmth. ‣ Warnings & Precautions: Do not use while sleeping. Regularly check the application site to prevent skin damage. Remove if overheating occurs.