Callaway PreOwned - The Big Bertha 2008 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 i-brids combine the accuracy control of irons with the forgiveness versatility of a hybrid are the most highly playable hybrid-like irons Callaway Golf could make. In the womens model the 4 through 7 iron is always going to be the i-brid version while the 8 thru lob wedge will be the traditional. On the mens model the 3 through 5 iron comes in both i-brid and traditional. Please look for the i designation when making your selection.