Light, comfortable, no slipping or moving. Great coverage. Minimal to no vision blocking from top of frame. Open bottom prevents sweat pooling. They fit great with my Specialized Decibel helmet. Lifetime warranty on the lenses.

I have a small head, and they fit snug...not a problem for me, but they might be too tight for some. Will have to see if the Adaptalite lenses will be dark enough for summer riding.

These glasses are great. They fit tight on my forehead and the frame is shaped so I'm not looking over or through it when I'm on my aerobars -- one of the best pairs of glasses in that respect, which is why I got them. The guy at my LBS turned me onto the Tarzos instead of the frameless Arcs due to discomfort caused by their metal arms. Mine have the Adaptalite lenses, which don't seem to get very dark, but it's nice to have a range without having to mess with different lenses.

Similar Products Used:

Oakley m-frames, Nike Undermine, Nashbar frameless.