PRODUCT OVERVIEW:Accessory lenses are made of optically pure Lexan® lens material, an innovation that blocks 100% of all UV radiation. Oakley's CAD/CAM engineering makes lens replacement simple, yet maximizes impact protection while the lenses are installed. For select goggles, choose an optional IRIDIUM® lens coating to minimize glare and tune light transmission. Important Note: Use care when installing/removing accessory lenses. Scratched lenses can not be returned and are not covered under Oakley's warranty policy.