Just cut these: Xx xmetal, base in prism corrected, custom cut lenses. Not authentic Oakley lenses. These are from a Harley Davidson sunglass. I sold the glasses in my store, decided to Custom cut these cool Blue Gradient lenses. Almost a blue gray top, and blue bottom! $13 shipped in USA. A steal at this price. Brand new, polycarbonate, and optically correct 8.75 curvature.