Awesome looking sunglasses.  Awesome lenses.  I had the matte navy with Chrome Iridium lenses.  Very sad that they didn't fit.  I'd say if you wear a hat size of 7 1/2(My size) or bigger you may run into the same problem.  The frame is not very flexible and after 30-45 minutes they started to feel like they were pinching my head and made me forget about how cool they look.