The Oakley Flak 2.0 S OO9511 951107 sunglasses feature a smaller frame with enhanced lens coverage, designed to optimize peripheral view with High Definition Opticsâ„¢. Its durable yet lightweight construction takes performance to the next level while maintaining style. The square frame, made from O_matter, offers a decisive look with gray color and gray lenses, providing a modern aesthetic. These sunglasses are recommended for round and oval faces as they add definition and structure to facial features, making them ideal for both men and women.