The Smith Redline Sunglasses let you swap out lenses to adapt to changing light conditions and charge full-speed-ahead. The medium fit provides ample coverage without interfering with headwear like hats or helmets. Megol nose and temple pads keep the Redline in place during active endeavors like mountainbiking and trail running.
I got the white, bronze lens. I've got a tiny bean. These stay snug on my small bean, but I'd like the lens to be a little larger. I wear these mostly for trail running and wear the glasses pretty sung up against my face. Because these are smaller, the lower part of the lens is in the periphery. I've gotten used to it over time, but took some adjusting. Overall the lens is good, but I'm not an expert there. Ideally, I'd get a polarized pair, but didn't want to spend the extra stones (tend to lose glasses), so these work well. Good, not great.