The new Epic Flash Sub Zero driver features Callaways new Flash Face and several additional performance technologies to make this the ultimate combination of low-spin and high MOI in a driver. Flash Face incorporates an entirely new method of architecture to give golfers a remarkably hot face that delivers a boost in distance-enhancing ball speed in the faces center-region. Developed with the help of Artificial Intelligence and Machine Learning, the Flash Face design is a drastic departure from any previous Callaway face technology. Flash Faces unique, inner-side mapping consists of dozens of subtle ripples flowing from heel to toe to elevate COR in thefaces center region. That conventiondefying accomplishment promotes a significant boost in ball speed, helping make your longest drives go longer. Jailbreak Technology for Faster Ball Speed. Internal Jailbreak bars stiffen and stabilize the crown and sole, placing more impact load on the face to promote faster ball speed. Adjustable Perimeter Weighting for Ball Flight Control. Repositioning the 12-gram sliding weight gives golfers the power to easily promote draws, fades or a straighter flight. The firsttime for APW in a Sub Zero driver.