I use these mostly for mountain biking, hiking, and kayaking. They provide great protection for all. The interchangeable lenses are great for all different light conditions. The only fault I have found with these are some fogging when mountain biking. On warm humid days the lenses instantly fog up for me when I come to a stop on the bike. This only happens on early morning rides or in very humid conditions. As long as you have air moving across your face they do not pose a problem. The lenses are a little tricky at first to change, but after a few times it is easy. All around, I highly recommend these shades.