Don't be fooled -- the Oakley guarantee is NOT "for life" in the way you think it is. It's more like the model life.
Here's my saga -- I raced for a team that was sponsored (in part) by Oakley. Prior to then, I had bought a set of the Factory Pilots, and later the Blades. In a race-crash, I broke the Blades. They would not replace them since the Blades were no longer made. I bought a pair of the M-frames with the Heater lens, and through a few years broke the frames on several pair -- always nearly the same place, on the brow bar. Each time, I got a warrantee replacement. After going through this several times, I upgraded to the Pro-M frame, and have had no problems since.
My mother has an eye condition which requires her to wear full-wrap shades when outdoors. I bought a pair of the M-frames for her, which she wore often. After some time, the frame broke (this one at the hinge. Well, the best they would do is a $40 credit on a new M-frames, since the design had changed over the course of the ensuing time.
Oakley DOES NOT do any replacing of lenses for any reason (other than provable manufacturing defects).
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