Diamond MMA Compression Shorts with Built-in Jock Strap Supporter with Athletic Cup Pocket for Sports The Diamond MMA compression jock with built in cup pocket is the ultimate in groin protection for high-impact sports and delivers the most effective groin protection without sacrificing comfort. Made from military grade elastics and premium construction, the Diamond MMA groin protection system leverages a high performance 4-strap jock system to hold a specially designed athletic cup in place within a perfectly tailored cup pocket. This patent pending system prevents both lateral and vertical movement of the cup. The Diamond MMA system has a drawstring providing a custom fit. The Diamond MMA Athletic Cup (sold separately) incorporates a co-molded elastomer design coupled with a polycarbonate core to provide uncompromising comfort and protection for the athlete. Designed by award winning designers and Stanford University engineers, the system has been approved by Doctors and Urologists as the best groin protection on the market. Diamond MMA products are used by professional athletes worldwide without sponsorships. Proudly designed and manufactured in the United States.