Created with breathable, four-way stretch mesh, the Core Supporter achieves the perfect fit. The comfort waistband allows you to play without irritation. The Shock Doctor BioFlex Cup, a vented bio-shape cup designed to shield areas where protection is most crucial. The body of this core protective cup forms flawlessly to your athletic frame to provide unrestricted movement, airflow and comfort. Secure and comfortable fit Mesh cup panel for maximum ventilation Includes BioFlex Protective Cup - features gel perimeter pad that allows for unrestricted movement and improved comfort. Also shields and transfers shock and impacts up to 100 mph away from the body.