"Fantastic Multisport Sunglasses" - Review of Smith Factor Interchangeable Sunglasses - Polarchromic

I really like these sunglasses. I use them when I go for a road ride and when I run. They are extremely lightweight! The nose pads stick to your face like crazy, even when you're sweating. The photochromic thing is cool too. Although you can't really tell when it's happening, they do get darker or lighter, depending on the light conditions. I highly suggest them to any althete...or anyone for that matter!
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