The Boss is Innovas first Speed 13 Distance Driver. This is a fast stable driver that can handle full power throws and moderate headwinds. Advanced players and sidearm throwers will appreciate the dependable stability. The Boss has a slight high speed turn to help maximize distance with a predictable fade. Not recommended for players who throw less than 300 feet. The Champion Boss is endorsed by 2008 World Champion, David Feldberg. Diameter: 21.2cm Plastic: Star Weight Range: 167-175g. Best Choice for: Power Players, Sidearm Throws, Fast, long distance off the tee.