The big bertha alpha 815 hybrid focuses on a more penetrating trajectory ball speed and adjustability in a complete distance hybrid for better playersball speed all over the facehigh speed at every impact location from a forged hyper speed face cupcontrolled trajectorypenetrating ball flight and less spin are what you get from an internal standing wave and sole weighting that move the cg low and forwardcompact head shape with less offsetthe compact shape and rounded half pear toe profi