Callaway XR Speed Ladies Driver CALLAWAY GOLF'S HOTTEST EVER FACE WITH THE NEW X FACE VFT X Face VFT is the very latest evolution of Callaway’s VFT (Variable Face Thickness) designed to maximise ball speeds across the entire face. X Face VFT is the lightest, most flexible and hottest face we have ever designed. CARBON COMPOSITE CROWN TO INCREASE MOI The inclusion of a carbon composite crown on XR SPEED is 45% lighter vs XR 16 titanium crown which significantly improves the mass properties plus lowers centre of gravity for improved forgiveness with increased distances. FASTER HEAD SPEED FROM A REFINED “SPEED STEP” DESIGNED IN CONJUNCTION WITH BOEING Refined aerodynamic efficiency with improved air flow over and around the head thanks to the latest “Speed Step” designed in conjunction with Boeing engineers for faster club head speeds. ULTRA PREMIUM SHAFT AS STANDARD One of the most premium aftermarket shafts available (used in the super-premium Epic driver), the Project X HZRDUS shaft is now available in the new XR Speed Driver.