Shimano S50X Multi Lens Sunglasses. Treat your eyes to a pair of the Shimano S50X Sunglasses. These glasses include two sets of lenses constructed from lightweight and strong Lexan polycarbonate. One set of lenses features a darker, mirrored hue for all around performance in sunny conditions as well as a clear lens to handle riding in the rain or at night. The lenses sport anti fog and anti scratch treatment as well as a decentered design for optimal optical clarity. The frames are constructed of Grilamid TR90 nylon to ensure they're lightweight, strong, and durable while the adjustable nosepiece and temples help ensure a precision fit.