Our most tested Tour Performance balls ever. After 99 prototypes and the most exhaustive testing we've put a Mizuno ball through, we created the perfect duo for our next generation of tour players. Both the RB Tour and RB Tour X feel sensationally soft at impact, as you would expect from Mizuno. Both lower spinning and efficient from the driver. With an AXIALFLOW dimple that creates a high launch from the driver (compared to other tour-type balls) and a flatter flight from the short irons (compared to other tour-type balls).