The all new mizuno jpx golf ball with dimple cluster design for delayed descent more hang time dimple cluster designmicro dimples activate in descent added airtime through aerodynamic design 3 piece constructionsoft responsive playability the lsquodimple clusterrsquo design of the new mizuno jpx golf ball 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 on di