Description of Oakley Gascan Sunglasses - Brown Tortoise / Bronze HIGH DEFINITION OPTICS® (HDO®) combines patented optics and PLUTONITE® lens material that provides 100% UV filtering and unsurpassed impact protection. Two lenses are cut from the curve of a single lens shield, then mounted in the frame to maintain the original, continuous contour. The Oakley Gascan Sunglasses look is so unique, Oakley customizes their corporate logo just for this eyewear. Lightweight O MATTER® frame material offers premium comfort when you wear the Gascan shades. Peripheral vision is maximized by XYZ OPTICS®, an innovation that maintains visual clarity at all angles of view. Impact protection meets ANSI Z87.1 standards, and our Three-Point Fit retains the lenses in precise optical alignment. True metal icons sign this Oakley original. Prescription Ready. Also available in Asian Fit. Experience unique style and premium comfort with the Oakley Gascan shades. Features: High definition optics Lightweight O Matter frame XYZ optics Plutonite lens material 100% UV protection Meets all ANSI Z87.1 standards