Express your stylish side and improve your visual acuity with the Oakley Flak Asian Fit Black Iridium Lenses. The lenses are polarized and filter out some 99 % of glare without additional optical distortion. These features provide you with crystal clear views. The lenses are designed to Oakley’s High Definition Optics system specifications. That means you get American National Standards Institute quality for impact resistance, clarity, and image fidelity. These and other characteristics make these lenses valuable for active pursuits.