When you wear the OAKLEY CANTEEN frame, youre rejecting the gutless technology of ordinary eyewear. This design offers comfortable lightweight design rendered from durable O MATTER® frame material, enhanced with dual cam hinges, and optimized with UNOBTAINIUM® components to increase grip with perspiration. HIGH DEFINITION OPTICS® (HDO®) are for unbeatable performance, PLUTONITE® lenses for 100% UV filtering, and patented XYZ OPTICS® for clarity at all angles of vision. As with all Oakley sunglasses the lens meet all ANSI Z87.1 standards for optical precision and impact resistance. OAKLEY CANTEEN makes a fashion statement by letting technology do the talking!