Aviator sunglasses are a style of sunglasses that were developed . Aviator sunglasses, or “pilot’s glasses”, were originally developed for pilots to protect their eyes while flying, thus the name aviator They are characterized by dark, often reflective lenses having an area two or three times the area of the eyeball, and very thin metal frames with double or triple bridge (so-called ?bullet hole?) and bayonet earpieces or flexible cable temples that hook behind the ears. The large lenses are not flat but slightly convex. The design attempts to cover the entire range of the human eye and prevent as much light as possible from entering the eye from any angle Moderately popular throughout the 1940s and 1950s, Aviators became mainstream between the 1960s