Sunglasses are sunglasses. They cut the glare and protect your eyes. Besides that, they make you look cool. I would surmise that most cyclists choose their sunglasses based mostly upon design and fit. I have gone through dozens of over the years and I have not noticed a huge difference between the extremely pricey to entry level models.

This past weekend I was in a Sprint that was thickly overcast so the lighting was fairly dark throughout the race. I wear my sunglasses when I ride my bike outdoors, but it was appearant that it would have been nice with a pair of glasses for the bike that performed better in low light situations. Pain is the sensation of weakness leaving the body!

so i'm trying to find some good sunglasses and not having much luck. in the past i've just trained w/ cheap-o Walmart or gas station sunglasses but i'm looking into getting a good pair, preferably polarized, that will be good for long rides as well as running. i was looking at a few different brands: Specialized Helix: http://www.specialized.com/bc/SBCEqProduct.jsp?spid=34227

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