Oakley Sunglasses Lance Armstrong Livestrong Radar Path - Medium Fit. O Matter frame material is engineered to withstand the abuse of athletics. The aerodynamic design includes surge ports that channel a cooling flow of air, an essential for the heat of competition. Secure, precise fit with interchangeable nosepiece sizes and Unobtainium components that increase grip with sweat. Durable, lightweight polycarbonate lenses provide startling optical clarity and protection against high-mass and high-velocity impact. Prevent water from leaving streaks and sheens with a permanent Hydrophobic lens coating that also maintains smudge resistance. Meets all ANSI Z87.1 standards for high-mass and high-velocity impact protection. 100% UV Protection. 1 Year Warranty.