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 HOLLOW CONSTRUCTION A hollow design through the set gives every club the super power of hybrid-like launch and distance. BAFFLER RAILS Baffler Rails allow the club to glide effortlessly through any turf condition, making a great shot outcome always possible. 4 HYBRID IN THE SET A 4-hybrid launches higher and is more forgiving than a 4-iron, making longer approach shots not just easier, but much more consistent.