
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.
Great frames and lens at a great price. The transition Lenses work perfectly for that 4 hour + ride that begins at 6 am. IMHO the optics are as good as they come. I'm probably going to get another pair.
I really like the transition especially when in trees / sun transition
Changes with light effectively as advertised. Great fitting glasses
Full vision. Great sunglasses. Easily fitted
The glasses have a small tint great for mountain biking with low sun visibility. Quality is great too, feels light and secure.