Oakley Flight Deck XM (A) Snow Goggles Rimless lens design for unparalleled peripheral vision, and streamlined frame and outrigger design for full helmet compatibility Optically correct rimless lens design with F3 Anti-fog coating, and discreet frame notches at temples for compatibility with most RX eyewear frames Rigid lens sub-frame attachment for fast and easy lens changing, and a flexible O Matter faceplate for comfort and airflow Prizm lenses provide unprecedented control of light transmission resulting in colors precisely tuned to maximize contrast and enhance visibility High Definition Optics (HDO), and 100% protection againstUVA,UVB,UVCand harmful blue light