To build the most forgiving all-stainless steel set of golf clubs Callaway Golf has ever developed, the engineers set aside conventional thinking, utilized innovative technologies and have redefined the shape of super game-improvement. The 2008 Big Bertha Irons take forgiveness to new heights by integrating a set of clubs featuring the new i-brids™, clubs designed to replace hard-to-hit long irons. The three i-brids combine the accuracy and control of irons with the forgiveness and versatility of a hybrid and are the most highly playable hybrid-like irons Callaway Golf could make. The set smoothly transitions into traditionally shaped irons that feature increased offset, a larger effective hitting area and a constant width sole for better forgiveness.