text: (Black Polarized) - The price is certainly unbeatable when you have to pay $160 for legitimate Oakley Polarized Lenses but two obvious differences exist in theses cheaper replacements. (1) The Lens thickness is approximately 1/2 the thickness of the Oakleys.  This in itself makes the Lenses malleable to fitting within the frame with little effort, but it also feels cheaply made. (2) There is obvious field distortion that does not exist with the original Oakley lenses.  I was able to tell my vision was distorted as soon as they covered my eyes.  To validate the distortion I kept my eyes fixed on a square object and slowly moved my head away and back again and the square shape would lose its crisp edges in favor of round edges and then back again.  Overall these replacements will work for me but I don't trust what I see and do not plan on driving or playing an fast action sports with these on.