Lower back self-heating patch - 4 patches

Thermacare Self-Heating Lower Back Patches provide effective, targeted relief of muscle and joint pain associated with muscle strain, muscle aches or osteoarthritis. They have multiple cells that contain air-thermoactive agents, such as iron. As soon as it is applied to the skin, it diffuses constant heat for 8 or 16 hours, which relaxes the muscles and thus relieves pain.