The 2017 Great Big Bertha Epic Driver from Callaway Golf is so-named because it represents an Epic shift in how the head and face behave to enhance power; spearheaded by Callaway's innovative Jailbreak Technology and Exo-Cage/triaxial carbon construction. Any golfer, from scratch players to high handicappers, will find more speed, distance and control with the GBB Epic. At impact, a driver's crown, sole and face each bend, flex and rebound. Jailbreak positions two ultra-light (3 gram) and ultra-strong titanium bars behind the face, connected to the crown and sole. Jailbreak bars reduce crown and sole deflection, allowing the face to take on more impact-load to focus more energy - physicists call this energy lensing - across more of the face to promote longer average distance from swing to swing.