Shock Doctor Core Brief with Single BioFlex Cup - Boys' Grade SchoolThis youth brief is designed with moisture-wicking, four-way-stretch fabric that moves with your body while eliminating sweat. The internal mesh cup panel secures the BioFlex Cup and increases ventilation to improve cooling. The cup's vented, bio-shape construction shields areas where protection is most needed. Its integrated gel perimeter forms to your frame for unrestricted movement and optimal air flow. A comfort waistband allows you to play with a secure fit and no irritation.