Mikasa FINA Mens Game Ball. Official Game Ball of the 2008 Beijing Olympic Games. Official Game Ball for all Men's FINA Water Polo Competitions. Official Ball of FINA World Championships. Official Ball of FINA World League. Highest quality long wearing rubber cover with professional buffed surface. Nylon wound with double laminated butyl rubber bladder construction. Made in Japan. Please be careful when inflating - the needle must be lubricated and twisted in gently. Swimmeroo Recommendation - the best Ball in the World.