Callaway Women's Big Bertha Iron Set Distance Where You Need It: HIGHER BALL SPEED all across the face comes from the same 360 Face Cup technology we put in fairway woods to give you more distance where you need it. Combined with an Internal Standing Wave, this is the hottest iron we've ever produced Maximum Forgiveness: Your shots will launch higher and fly straighter. Hollow body construction lets us put the weight where we want it so you get an incredibly forgiving iron. Maximum Forgiveness: Your shots will launch higher and fly straighter. Hollow body construction lets us put the weight where we want it so you get an incredibly forgiving iron. Advanced, Progressive Looks: The sole designs are what you want to see - wider in the longer irons to give you confidence, narrower in the shorter irons because we know you'll hit those well. With a progressive, modern topline, you can take one look at the Big Berthas and know that they'll work for you. Premium Shaft Options: We're combining our best Big Bertha technology with some of the most premium aftermarket shafts out there. Hybrid Combo Set Option: If you like to hit hybrids, replace your long irons with our new Big Bertha Hybrids. Our first adjustable hybrids are long and can be tuned to 8 different settings with the Optifit hosel.