Discraft Ultimate Disc Bundle - Set of 3 175g Ultra Stars (Yellow) The 175g Ultra-Star (10.75" diameter) is the official disc of USA Ultimate and the choice of Ultimate teams worldwide for casual, league, and tournament play. Since its introduction in 1981, the Discraft 175 has set the standards of quality, consistency, and performance necessary for the demanding needs of the sport of Ultimate Frisbee. Longer distance: The Discraft Ultra-Star flies further than any other Ultimate Frisbee disc. Superior stability: The Discraft Ultra-Star maintains your release angle longer than any other disc designed for both throwing and catching. Advanced Aerodynamics: With its contoured grip and aerodynamic engineering, the Discraft Ultra-Star is easier to throw at all levels of play from a throw on the beach to a World Championship Ultimate Frisbee match. Stamps May Vary