Rael Heating Patch for Menstrual Cramps alleviates PMS symptoms with natural heat therapy—your new heating pad to-go! The patches are infused with 3 herbal ingredients proven to be effective in naturally calming abdominal discomfort, reducing swelling and bloating, and improving mood and energy. These thin and lightweight adhesive patches are designed to easily stick on and be worn under clothing for comfort and convenience, and can soothe your biggest monthly menstrual cramps during the day or night. Upon application, the soothing patch instantly heats up to an ideal, therapeutic temperature to promote blood flow and help muscles relax for up to 8 hours at a time. How to Use: Apply patch on undergarments around common cramp zones. Do not place directly on skin.