I just used these on a 5 mile run on a clear day and they work great. Don't slip off my sweaty, sun-kissed nose and bounce, even when I'm running cross-country. I have a small head and face so I was worried they would fit but they fit great. The lenses are also polarized which is also an added bonus. My only gripe is that when trying to clean the lenses, one of the lenses wobbles and makes a popping noise, so I hope this won't be a problem in the future. But overall a great product for the price and I plan on getting the pink one.
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