The USAPA approved X-40 pickleball ball is now the Official Ball of US Open Pickleball Championships. Using only the best PE material and our advanced single piece design, this ball will withstand hours of the most aggressive play. The X-40 balls deliver a superb flight path thanks to the precision of our machine drilled holes. Perfectly weighted and sized, these balls will certainly impress anyone on the court! These outdoor pickleballs are available in both pink and yellow colors.