OVERVIEW: The Callaway Great Big Bertha Epic Sub Zero fairways feature four of Callaway’s technologies to create a longer, more forgiving, and low-spinning fairway. First is a crown made of triaxial carbon, which reduces the weight of the crown by 78% compared to a traditional steel crown and results in the lowest CG of any Callaway fairway to date. The second technology is Hyper Speed Face Cup technology, a thin and flexible rim around the inner side of the face which flexes and releases more...