The Supertech Wide Vision Roll- Off Lenses are made from high- quality, impact- resistant polycarbonate material. The injection- molded lens ensure zero visual distortion. All Supertech Wide Vision Roll- Off Lenses are specifically designed to work with the Alpinestars Roll- Off system. All lenses provide 100% UVA protection and have built in ""Glide Lines"" that keep the Roll- Off film moving freely across the lens. Lenses come in a wide variety of tints including, clear, blue, yellow, copper/rose and smoke.Alpinestars official replacement parts Supertech Wide Vision Roll- Off Lenses . The injection- molded lens ensures zero visual distortion. Made from high- quality, impact- resistant polycarbonate material. 100% UVA protection. Built- in silicone""Glide Lines, are designed to keep the Roll- Off film moving freely across the lens. Wide variety of tints including, clear, blue, yellow, copper/rose and smoke. The wide variety of Supertech Lens tints have a VLT, Visible light transmission, from between 90% to 25% and a filter category from 0 to 2 depending on your preferred lens tint.