Cyclists will often start riding at the break of dawn and finish before noon. They go from dark streets to full on blinding light within a few hours. This can take a toll on the eyes. Buying new transition lenses can help them ensure good visibility while keeping the eyes protected.
These lenses automatically adjust to the level of illumination in the environment. They will be clear when it’s dark and begin to turn dark as the sun comes up to balance things out. This is a great gear to have when you want your cycling to go on uninterrupted no matter the conditions.
It is definitely better to depend on this single piece of eye wear rather than carrying multiple pairs and have to switch out every time the weather changes. You can focus on keeping up with the group.