Cooper Actipoche 2 heating surfaces relieves pain with its long-lasting hot effect. Iron powder and activated carbon, thermoactive substances contained in the patch, naturally generate heat in contact with air. Once applied, the patch distributes continuous heat for 8 hours. The heat helps to relax aching muscles and relieve joint pain. The patch can be worn daily. It is easy to position and comfortable to wear, invisible and odorless. It is indicated for muscle pain: muscle contractures, back pain, torticollis, lumbago, cramps, but also for joint pain and stiffness: knee, elbow, shoulder, or menstrual pain. Size of a patch: 9.5 x 13 cm The patch is activated on contact with air. Only open the bag at the time of use. Remove the protective liner from the back of the patch. Apply sticky side to the painful area on clean, dry skin and press. The patch heats up in a few minutes and provides a constant feeling of warmth for 8 hours. After use, remove the patch by gently lifting one end and discard. Do not use the patch for more than 8 hours a day. Indication: Relieves muscle and joint pain (back, neck, shoulder). The American Low Value Shipment Regulatory Modernization Act is active since March 2016 and increases the duty and tax free value of goods American citiziens could import from other countries by mail from $200 to $800 as well as no formal customs procedures are required. The American Low Value Shipment Regulatory Modernization Act is active since March 2016 and increases the duty and tax free value of goods American citiziens could import from other countries by mail from $200 to $800 as well as no formal customs procedures are required