Mizuno jpx golf balls mizuno reveals new airtime concept with jpx ball with dimple cluster design for delayed descent dimple cluster designmicro dimples activate in descent added airtime through aerodynamic design 3 piece constructionsoft responsive playability the lsquodimple clusterrsquo design of the new jpx is a result of a 3 year study into the descent phase of ball flight in tandem with the fukuoka institute of technology mizunorsquos ball engineers found that by focusing o