The Championship Regular Duty ball lives up to its name with a battle-tested mindset and unquenchable spirit. Sporting Dura-Weave felt for improved durability on all court surfaces, recreational players can have fun and feel confident using this ball anytime, anywhere. The Championship Extra Duty ball lives up to its name with a battle-tested mindset and unquenchable spirit. Sporting Dura-Weave felt for improved durability on all court surfaces, recreational players can have fun and feel confident using this ball anytime, anywhere.