Oakley A-Frame 2.0 Goggles Flexible O Matter frame conforms to your face for optimized comfort and fit, with dual surge port frame vents for improved air circulation Articulating O Matter strap outriggers provide balanced fit, with or without a helmet. Fits most helmets Prizm lenses provide unprecedented control of light transmission resulting in colors precisely tuned to maximize contrast and enhance visibility Plutonite lens material provides 100% protection againstUVA,UVB,UVCand harmful blue light Optically correct dual-vented Lens with F3 Anti-fog coating & High Definition Optics (HDO)that maintain startling clarity at every angle of vision