KAP7 LEN Official Champions League Size 5 KAP7 is the Official ball of LEN European Aquatics which governs 54 Countries. KAP7 is trusted by the top water polo experts in the world. Play with the Official Ball of the LEN Champions League. FEATURES: The Official Water Polo Ball of LEN Champions League Water reactant grip for control Hand buffed for added grip Precision wound nylon carcass