ROCKBROS Photochromic Sunglasses for Men Cycling Sunglasses Sports Bike Glasses

Nice fit. Clear enough for dusk and they darken just enough for sunlight. They stay in pretty well too. Very large over the face and eyes to block wind very well.

I use these for mountain bike riding in Colorado. I love the photochromic feature. When riding in and out of shade, the glasses do a great job of providing eye protection. Also, they work well with the Troy Lee Designs helmet I wear. I'd highly recommend these to any riders out there.

I've been looking for a pair of riding glasses that can provide eye protection and some relief from sun glare. I've been moving away from dark polarized glasses toward lighter tints and clear lenses. This does split the difference pretty well and gives you some of both.These are not getting dark. They just don't do it. They aren't bad - I've got prescription Transition lenses for my glasses and these work nearly the same. When comparing the two, these Rock Bros have a bit less tint when dark, but not too bad. They are nearly 100% clear when not being exposed to UV.They require UV be on them for them to stay dark. If under a visor or generally not getting much UV, that will allow for them to go clear.I'm happy with them so far. I've done about a dozen rides in them and they work. They are plastic, so they scratch pretty easily. But I'm happy to have these to keep things out of my eye and offering a bit of help with the sun.*****Update****** 9/8/21I'm on my second pair. The first pair's frame cracked at the temple when they were sat on. Derp.I purchased the same glasses and can report these work just the same as the original. Again, not getting totally dark/black, but tinted and cuts the glare. I wear these most rides and think they are fine. For under $25, good enough.

With dark coming earlier now I was needing some clear glasses for mountain biking in the evening and night riding. I really like that these will tint in sunlight and then change to clear in less light. They fit well, are light weight and have a good field of view with the larger lens size. The lens does tend to fog up when I stop, but while moving there is enough air flow to be clear. I have not noticed any odd air leakage blowing on my eyes like some other glasses I've owned.

I found a pair of these on a trail in BC, and though hmm, these are nice. Then as fate would have it I found the owners and returned them. They told me that they're these cheap-o's from Amazon so when I got back to the US I ordered a pair. They're good for low-light and bright light. I basically put them on and then don't think about them until I get off my bike. Good protection too from errant branches and the occasional cicada trying to blast into my eyes.Rockbros are the best Bros to Rock on the MTB. <cheese>

It's my 3rd pair of sunglasses from rockbros. All 3 was good, lenses were clear and photochromic worked well. My complaint is with myopia adapter. It does not last, and just breaks. Not dropped, not removed, no bump, and during mid ride it suddenly breaks. It is my 3rd pair just because of myopia adapter broke 3 times, not the sunglasses. But they don't have replacement for sale. First one broke when I tried to remove it to clean it. So I thought it was my fault. So I ordered second pair, and after a ride I left my sunglasses in case in trunk of my car. Next time I open the case, and it's broke , inside the case. I thought that was weird, so I order the 3rd pair and this time it just breaks on mid ride. No particular reason I can think of. If you are just using the sunglasses without prescription, this is good sunglass for such a low price. But if you are getting it for rx, look somewhere else.

These glasses are great for cycling. I go on long rides and short rides and these are an essential part of my kit. It keeps the window, bugs, rain, and debris out of my eyes. I really enjoy getting out on the trail or open road and going a long way. Quite often to do that I have to start and end my ride in conditions where lighting has change (sometimes a lot). Having sunglasses on that adjust to those conditions are key. I need eye protection in all lighting situations but do not need smoked lenses in the dark. I do not have the space or inclination to carry two or more pair of sunglasses with me. Enter these wonderful pieces of eyewear. They are comfortable on the face, light weight and aero. They react quickly to changing light conditions and have stood up to all the elements.

Nothing about these lenses changes colors. I wore them today, a bright sunny day, direct sunlight in my eyes, for an hour-long bike ride. At no point did these get darker and protect my eyes from the sun. I'll keep them as a spare pair of winter glasses, but I recommend avoiding if your looking for photochromic lenses that work.