Bison Head XXL Aviators are 155mm metal frames at the temple, feature polarized UV400 protection, and are classic badass. Most of all they fit. No more head squeeze, no more feeling ridiculous in small shades. No more "I wish I had aviators that fit me". This model is black frame and black lens, so lets call them your formal going out Aviators. Classic, huge, awesome. My God you are handsome in these.