I find a good pair of shades essential. I can forgo most other accessories but shades have to be there. These are them. On just about all excursions these make the cut. Super Light and fit well enough to forget they are even there. REALLY!The dark lens are great in general but for big mountain days or true exposure these arent enough, but thats where another set comes into play. The lighter lens work well in low light and just as well for just keeping stuff out of your eyes.My only gripe is that the top bar comes directly into my line of sight while cycling. I gave it a few weeks to really see what was what, but when bent over the bars it really gets in your vision. It may just be a personal fit issue but worth noting.