These glasses are excellent for all riding conditions. The lenses interchange from clear to dark in seconds. If you don't want to carry multiple pairs of glasses with you, these are the ones for you. I found that you can carry the extra lenses inside your helmet in the foam. You can't even tell that they are there. That way saddle bags or not, you stilll have your other lenses. they make replacement lenses for these glasses also. Unlike alot of the others
Overall good quality product at a good price for all you get. Two problems - lenses are difficult to change and result in fingprints all over the lenses. Second, the paint on my frames had a spot that is flaking off already. Personally, it doesn't bother me but does decrease overall quality of product.
I bought cheap and I got cheap. They work pretty good as goggles, but as sun-glasses, not so much. Mine are warped and twisted and I don't think there is a face out there that they'll fit. Bobster has a good warranty and say they will repair or replace to correct the problem. I have faith.