Mizuno reveals new airtime concept with jpx ball with dimple cluster design for delayed descentdimple cluster designmicro dimples activate in descentadded airtime through aerodynamic design3 piece constructionsoft responsive playabilitythe lsquodimple clusterrsquo design of the new jpx is a result of a 3 year study into the descent phase of ball flightin tandem with the fukuoka institute of technology mizunorsquos ball engineers found that by focusing on dimple performance in the l