The Shock Doctor Core Supporter with BioFlex Cup provides the perfect amount of protection without giving in on comfort. Made of a breathable, four-way stretch mesh, the Core Supporter achieves the perfect fit. The comfort waistband allows you to play sports without irritation. A vented bio-shape cup offers breathable mesh for maximum airflow.  The body of this core protective cup forms flawlessly to your athletic frame to provide unrestricted movement, airflow and comfort.