Answer by RoboKaren for Cycling glasses life span
Sunglasses have two enemies: dirt and UV rays. The polycarbonate itself is fairly tough and can last over ten years. It’s likely to get scratched up before the UV starts to cause it to yellow or...
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I've had my Tifosi sport glasses with photochromic lenses for about 4 years. Lately, when I rode them in 10 am morning sun, my eyebrow and eye started to feel terrible pain, that passed once I removed...
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