Description of Oakley A Frame Snow Goggles - Text / Fire Iridium Lens fog is a performance killer, so we developed a three-tiered defense. First, we devised surge ports to control airflow. Second, we formulated F-3 Series anti-fog treatment. Third, we engineered a dual lens design to reduce fog with a thermal barrier of trapped air. Then we took all that technology and juiced it with the precision of HIGH DEFINITION OPTICS® (HDO®), topping it off with a wish list from the pros: 100% UV filtering, impact protection that meets all ANSI Z87.1 / ASTM F659 standards, durable urethane that stays flexible, and comfortable triple-layer polar fleece foam with moisture wicking. About the only thing you don’t get with the A FRAME® goggles is fog. Features: Anti Fog Treated Ballistic Lens Plutonite® lens pass ANSI standard Z87.1 for optical clarity, high mass and high velocity impact Patented Polaric Ellipsoid™ lens geometry 100% protection against UV A, B and harmful blue light Triple polar-tech fleece face foam for maximum moisture wicking Optically corrected dual lens goggle Superior venting to eliminate fogging