
These sunglasses have a lightweight flexible plastic frame. I'm not sure how durable they will be in the long run, but I believe the quality is acceptable for $20. I have a large face and these sunglasses are wide enough to fit comfortably. The effect of polarization in lenses is noticeable. The photochromic effect is less noticeable. The lenses darken slowly in bright sunlight and do not get as dark as regular sunglasses. Proprietary photochromic lenses work much better.

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