Oakley’s Radar eV Path is the result of decades of research and development with their world-class athletes. The lens has an extended field of view, is interchangeable, and uses Prizm technology so you see with crisp and enhanced clarity. Unobtainium earsocks and nosepads keep the glasses securely in place with grip that increases with perspiration. O Matter frame material is durable while keeping them lightweight.Lens: This lens is suitable for sunny through to cloudy conditions with a tint that increases contrast. It has been designed to be at its optimum in the snow. The base lens tint is rose. Prizm technology blocks specific wavelengths of light while boosting others to provide maximum contrast and enhanced visibility. This greater clarity results in reduced reaction times and increased performance over a wide range of light conditions.VLT: 13% (CAT 3) - Visual Light Transmission, VLT, refers to the amount of light that penetrates a lens. A low percentage means less light passes through and a higher percentage lets an increased amount of light through. FeaturesFit: Regular - UniversalSize: X Large O Matter frame material is lightweight, durable and offers all-day comfort Unobtanium nosepad and earsocks are non-slip and give increased grip with perspirationHDO (High Definition Optics) lenses are impact resistant while letting you see with crystal clear clarityPrizm lenses optimise contrast and enhance color enabling you can see in greater detailIridium lens coating reduces glarePlutonite lens material provides UV Protection filtering out 100% of all UVA, UVB up to 400nm Protective case and lens cleaning cloth included