Personalize your balls with your initials, Choose from two unique designs, Add 2 or 3 letter initials. The Mizuno Pro X embodies Mizuno’s relentless pursuit of performance excellence, so much so that they’re now proud members of the Mizuno Pro family. Designed to meet the demands of golfers at the highest level, these premium golf balls deliver advanced aerodynamics, enhanced speed, and exceptional control to complement any playing style.