Oakley Fives.
About 60 for non polarized, 100 or so for polarized. They fit like a charm, block out all the UV stuff, and their style prevents any other light from getting into your eyes (as in light that does not pass through the lens). Any sunglass store in a mall will have them. I have these and a $120 pair of Oakley A Wire 2.0s and I prefer the Fives much more then the higher priced ones, with the main reason being the way the Fives don't let any light in around the edges of the frames.
Edit:
Oh yeah, another perk of Oakley glasses is you get a 1 year waranty to replace them for free if anything happens to them, and after that its only $20 to get the frames replaced with brand new ones, and $30 if you want new lenses. So pretty much if something goes wrong you pay a bargan brand price to get all new Oakley quality parts.