When I installed the lens on my Oakley crankshafts, the top layer of the film started peeling off in the top corner near the nose on both sides. If you look closely you can see a small layer that is curved at the top of the lens/frame. It does not disturb the view and is only noticeable when looking at it. Otherwise the lens blocks the light well and is excellent. I would have given 5 stars if the layer hadn't curled up during installation.
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