The Zeal Optics Crowley Sunglasses combine fashion, function, and modern technologies to protect with style. Their classic round shape gets a modern update with contrasting lines and a keyhole-style bridge. The frames are made with lightweight and flexible rubber that makes them durable. The polarized lenses are a copper color, which enhances colors and contrast no matter the brightness. They are made with innovative bio-plastic and are treated to be scratch resistant.