About Baden As the fastest-growing equipment company in the world, the Baden name is becoming synonymous with sports. This independent, family-owned company began making balls in 1979, starting on a path that would eventually find involved them in nearly every popular American sport. Today, Baden is focused on innovation, making equipment and balls that forward the game itself. You"ll find Baden equipment as the official equipment of amateur and professional sports leagues around the world. Size 4 standard water polo ball. Advanced buffing process for better grip. Butyl bladder for maximum air retention. Precision nylon-wound carcass. NFHS-approved colors.