Professional Athletic Protection. X0 ProCup is the original flex sided cup. It"s the brand athletes and parents trust to provide impact protection and comfort. X0"s patented 2Shot technology and ProCup"s ergonomic shape creates one of the most comfortable cups you can buy. X0 ProCup embodies authentic athletic protection. Silver ProCup - Cup Only Ideal size cup for adults 18+ Features XO"s patented XO Zone Technology - hard cup protection with a soft rubber over mold that creates the Most Comfortable Cup You Can Buy