Shock Doctor has quite a package for your package. The Core Brief with Bio Cup features the X-FIT CUP RETENTION SYSTEM integrates a wraparound external supporter for unparalleled comfort, fit and protection while the BIOFLEX CUP`s unique, vented bio-shape body with integrated gel perimeter pad helps you get that unrestricted movement and improved comfort. The Shock Doctor Core Brief with Bio Cup is constructed with supportive four-way stretch anti-microbial fabric that wicks moisture away from the skin.