A non-medicated, unscented & self-heating steam patch Developed with Japan's unique steam heat technology to help relieve shoulder & lower back pain Warms up upon opening & generates gentle steam heat of 40°C Helps improve blood circulation in the affected area, eases pain or stiffness & soothes muscle fatigue The steam heat lasts for 5-8 hours Made with lightweight & comfortable material that is gentle to skin Individually packaged, easy to carry & use Made in Japan