Cura-Heat Back & Shoulder Pain Relief Patches (6 of 7 mentioned) are a drug-free, non-invasive, temporary pain relief option (back pain, shoulder pain) in a pack of 7 patches. These patches are a simple, uncomplicated non-drug treatment for people dealing with pain. The patch is applied directly to the skin - once applied, the back and shoulder patches provide heat therapy for up to 12 hours. This heat from the patch is designed to help increase blood flow to the affected area to help ease pain and promote healing. The patches are thin and flexible, allowing for it to conform to your body for maximum contact and effectiveness. Cura-Heat patches are simple to use. You simply separate the patch from its package, peel the backing paper off, and apply it to the affected area. The heat will gradually increase, reaching maximum temperature at approximately 30 minutes. The patch will provide constant in-the-moment warmth, soothing away pain and stiffness.