Hollow Construction A hollow body is filled with a softer and lighter foam for added distance and improved feel Tungsten Weighting A 61g tungsten weight keeps CG low to reduce spin for longer total distance Forged PWRSHELL Face A forged PWRSHELL Face offers more flexibility than a traditional face insert, creating elastic rebound for faster ball speed and higher launch H.O.T Face Technology H.O.T Face Technology uses artificial intelligence to design a variable thickness pattern that delivers more efficient speed and spin across the face