This oversized, thin metal frame has been turning heads since the 70s. Square 1971 Clear Evolve has non-prescription, photochromic lenses that shift from clear to grey in changing light conditions – so you'll never need to take them off. They lenses are crystal, for maximum clarity, filter 100% of Uv rays and are finished with a front-side anti-reflective treatment. From sunrise run to sunset bar, if they're always on you're always covered.