I use them for practically every outdoor activity and sport(Volleyball, Mountain biking, Running, Hiking, Fishing, Shooting, Racing, etc.).

You could buy a frame and interchange the frames according to whatever the occasion; polarized for fishing, full colored Iridiums for those bright days, Persimmon for those cloudy days, high bright yellow for night motoring, or just clear for working in the shop.

I recommend the Oakley M-Frames to anyone that is very sport active.