Address 707 S. Grady Way Renton WA 98057 United States     Phone 425-728-4051     Business Email: support@vitalflexcore.co   About Us The Vital Flex Core ab stimulator works by sending electrical impulses to your abdominal muscles. These impulses cause the muscles to contract and relax, mimicking the actions during exercise. You can effortlessly train your core muscles with this device.  Hours Monday – Sunday 09:00-17:00