This is probably your best bet for cheaper Frogskins replacement lenses. Bought these to cheaply add polarized lenses to my favorite pair of sunglasses for a 9 day trip to the South West. My original Oakley lens has been scratch free for 3 years. These interchangeable lenses were scratched when first used. The optics also let us down a bit. They gave me a bit of a headache the first few times I used them. But then I got used to it.
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