Aviator sunglasses (also known as “Pilot shades”) are a style of sunglasses that were developed by Ray-Ban. They are characterized by dark, often reflective lenses having an area two or three times the area of the eye socket, and metal frames with wire temples which hook behind the ears. Contemporary models are often polarized (although wearing polarized sunglasses for flying is unwise since they may mask the light glinting off an oncoming aircraft). via wikipedia