Ideal for athletes of all ages and abilities, the Flex-Cup protects all the vital areas with a vented bio-shaped design, offering a comfortable fit and superior protection. Shock Doctor Protective Flex-Cup, Multi-Sport, Adult, Large. Lightweight Flex-Cup does not compromise protection. Five airflow ports keep you thoroughly cool. Deep contoured shape for enhanced protection and fit. Soft, impact-absorbing edges and sides conform, cushion and comfort.