Callaway Great Big Bertha Epic Driver

Increased Distance from Jailbreak Technology: A breakthrough innovation which dramatically increases distance by stiffening the body to transfer more energy to the ball.
Maximum Forgiveness from Exo-Cage Construction: Innovative head construction that unites our aerospace-grade titanium Exo-Cage outfitted with an ultra-light triaxial carbon crown (9.7g -- lightest ever in a Callaway driver) and sole (5.8g) allows us to distribute more weight in the perimeter for higher MOI and more forgiveness in a high-launch, low-spin design.
Precision Shot-shape Control from Adjustable Perimeter Weighting: Changing the position of the 17-gram weight on the precision-engineered track allows you to easily fit the club to your swing, providing 21 yards of shot-shaping control to promote straighter and longer tee shots.
Faster Head Speed from Industry-leading Aerodynamics: The streamlined head incorporates our proprietary Speed Step, created with direct input from aerodynamics experts at Boeing, to improve airflow to encourage more swing speed and distance without extra effort.
OptiFit Adjustability: An OptiFit Hosel allows for further fine-tuning in the fitting process to aid precise shot-shaping and adjustment of lofts up and down if required.