I will not ride without sunglasses or at least clear lense glasses. There is far too much debris from passing cars and stuff just flying around in the air. Last year I took a bee sting to the neck at 22 mph and it nearly took me right off the bike. Was thankful that it was not in my eye. This year already, on the MUP here, around 17 mph with no pedestrian traffic, I took one to the glasses and it bounced right off. No cyclist should ride without glasses.