Kask's Zen Visors are for use with Kask Zenith Helmets. The Panoramic lens is made from polycarbonate and treated for anti-fog and scratch resistance, and can also be worn over correcting glasses. The edge of the visor is cut proof, and the upper contour is made from rubber to keep out moisture. To attach the Zen Visor to the Zenith Helmet, a Kask adapter set for Zenith Visors is required. This adapter set must be purchased separately and does not come included. Meets or exceeds EN 166 and ANSI 287.1 standards.