VISION 8, 5, and 3 Lenses are constructed from the strongest and optically perfect, Polycarbonate material available. Anti-fog and hard coat is applied and all lenses provide 100% UVA protection. The VISION Lenses have a VLT between 25% and 90% depending on the chosen tint. The VLT is the "visible light transmission," which is basically how much light the lens lets into the goggles. Look amazing with excellent optics at the track or on the trail.