Foot, Neck & Back Patch: Kailo's Flex Patch features a patented array of tiny capacitors that work as a bio-antenna, designed to interact with your body's electrical system Flexible Muscle Relief: Flex Patch is made from a tear-resistant, flexible material that conforms to your body, providing relief for everything from a sore neck to foot discomfort Long-Lasting Relief: Each Kailo Flex Patch provides about 1 month of use; softness increases over time, ensuring comfort for your sciatica, shoulder discomfort, and more Powered By Your Body: The Flex Patch requires no external power source or charging; patch absorbs excess electrical interference to support your body's wellness Place a patch between your discomfort and the brain: Often the right spot is closer to the discomfort, but good placement has been found up to 18 inches away. After 1-2 minutes, re-evaluate your discomfort and move again if necessary. Further, the effectiveness of discomfort relief can vary from person to person due to individual factors such as tolerance, body composition, and the nature of the discomfort being addressed, therefore, this product may work better for some than others