I find that rimless sunglasses are the best type for cycling. When you lean forward on the bike and look ahead you do not see a frame in your field of view. I use them for commuting home. In the winter, I start out with light, but its dark half way home. I also have a different model Tifosi that has the light night fototec lens. This lens is better in the dark, but it seems to do nothing during the day. I prefer the red fototec overall. It does block some sun during the day and I personally find that I can use them in the dark as well. It's also reasonably good at reducing fogging which can be annoying in the winter. The lens has good clarity. They do scratch pretty easily though. There are a number of other rimless sunglasses out there, but I have found that many are too tall to fit under my helmet. The Oakley Evzero blades work, but they are more expensive and they don't have the range of photochromic lenses that Tifosi does. The Tifosi Rail is too tall, but the Rail XC is just about perfect for me.
Really nice large coverage cycling glasses. They have two different nose pieces included to get the best fit for your face and they are lightweight with very good optics. They look good and fit well. My only knocks are minor, but worth knowing...they fog easier than most of my Oakley and Smith lenses, and they don't have rubberized tips at the back of the arms where they touch your head and ears. In practice these are minor quibbles and I am very happy.
Kind of pricey, but WOW. These are without a doubt the best photochromic lenses I have ever used. Huge range in VLT and they transition really fast. Even in full sun they are really good. I was not expecting them to be this good, but now I might be bringing these along on more rides.
As a total optics nerd I have tried almost every major brand out there, but I always come back to KOO. This lens is no exception. My other fav lens is the fire lens becuase it actually does pretty well in lower light unlike many other red/fire mirror lenses. Def worth a try for MTB or if you have a lot of sun/shade on rides.
The lenses on 1 of my 3 Jawbreakers started degrading. At first I noticed little white spots in the Prizm film and then a section looked like a jigsaw puzzle. Surprisingly for the most part they were still functional. It seemed mostly cosmetic, but it did make them look OLD and I wondered how long before it would impact the vision and/or be extremely annoying. I decided to get the replacement lenses to refresh the look since my frames looked new. I take very good care of my eyewear and only use my Jawbreakers for cycling. They are immediately stored in their case after every ride. I am careful to only use the included cleaning cover to ensure they don't get scratched.
