Gary Gilchrist, a world-renowned golf coach who worked as the swing coach for Yani Tseng, Ariya Jutanugarn, and Lydia Ko, said, "I ask my students to draw their favorite pictures on golf balls. Whenever you look at the picture and prepare yourself, you can play accurately," thus revealing his special know-how for controlling the mental strength of professional golfers.

Saintnine golf ball incorporates "golf psychology," which the field of study only Saintnine pursues, and beyond "golf science" that all golf product makers are studying. And the product of this study is the "Mental Mate."

Saintnine Mental Mate is a "golf mental control-only character" created from a combination of color psychology that visually helps with mental control and animal characters developed based on analytical psychology to stimulate a golfers' mental strength.