I believe SPY makes a few polarized shades that are kinda similar in style. You could look into them.
Spy Optics
Last summer I purchased a pair of Oakley TwentyXX's. I also found a good deal on a pair of SPY Meteors, so I picked them up as a spare. Well, a year later now, and I wear the SPY's MUCH more than the Oakleys. They are relatively similar, but the SPY's cut the rays better in my opinion. Neither of them or polarized mind you.
2006 Arctic Cat SnoPro 440/700 EFI
1998 Arctic Cat ZR 600 EFI Custom
1996 Ski-Doo FormulaIII 600
A mountain lion roaming the prairie found a bull, killed it and ate the entire bull. With a heavy belly, unable to walk, the lion laid in the tall grass moaning and roaring. Soon a hunter, attracted by the roaring, shot and killed the lion.
Moral: When you're full of bull, keep your mouth shut!