The jpx 850 marks a new generation of distance generating hybridsthe primary characteristic of the jpx850rsquos shock wave sole is to enable the entire club head to contract and expand on impact ndash delivering an additional energy source to the clubface the additional mass also lowers the headrsquos centre of gravity maintaining high ball speeds directly off the turfthe profile at address leans towards the neutral lines preferred by mizunorsquos professional playersldquoth