Product Description STRAIGHT DISTANCE + ULTIMATE FORGIVENESSTWIST FACEA radical departure from traditional driver-face design, Twist Face is engineered to take you farther & straighter right down the center of the fairway. Twist Face presents a revolutionary new face curvature with a corrective face angle on off-center hits, engineered to reduce side spin & deliver straighter shots. By providing more loft in the high-toe & less loft in the low-heel, this groundbreaking technology produces more consistent side spin in the areas where golfers commonly mis-hit. HAMMERHEAD SLOTTaylor Mades new Hammerhead slot creates a massive sweet spot that pushes the limit of ballspeed to produce distance & forgiveness across the entire face. The reinforced outer portions of the slot allow for a lighter, more flexible face, while the center portion of the slot increases ballspeed on low-face strikes & drops spin for more distance. The result is a powerful & forgiving driver that delivers exceptional sound & feel. GEOCOUSTICTaking an imaginative approach to clubhead design, Geocoustic technology utilizes advanced sole shaping techniques to deliver a solid & explosive sound with exceptional feel. The recessed sole contour also frees up volume to produce a larger clubface with a 67% larger sweet spot. From the Tour to the amateur golfer, distance with consistency is the ultimate performance goal. With M4 driver, we have combined our revolutionary Twist Face technology with a new Hammerhead slot & a refined Geocoustic sole design to produce straight distance with a massive sweet spot. The result is consistent driving performance through a premium blend of power, forgiveness, & accuracy. Brian Bazzel Vice President Product Creation