I can't go any where without sunglasses even on cloudy days. I have the mahogany polar chromic copper and love these glasses. They filter the light nicely to where I can see as comfortably on sunny bluebird days as on cloudy ones. I wear them all the time around town and depending on the day on the mtb trails and all the time in BC touring. The storage case they come with is great for shoving them in the pack. I recommend!