Fine. The clips that attach it to the glasses have NO rubber or silicone so these things slide like crazy and don't let the shade come up so I can see when I'm not in the sun. I'm only going to keep them as "emergency" clip-on curtains because I also bought a set of clip-on curtains in different styles that have rubber grips and work much better. One thing, and that might just be because they're cheap plastic, although they say they're polarized, they tend to blur my vision enough to be noticeable. However cheaper and easier than buying new sunglasses.
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