Oakley's spare or replacement Prizm Road lens for the Sutro sport-performance sunglasses. The lens is especially adapted to road runners and cyclists with a 20% light transmission and increased contrast that works well with changing road surfaces. Prizm lens technology enhances colour, contrast and detail for an improved optical experience. The plutonite lens construction shields your vision from impacts and abrasions. The lens also protects against 100% of harmful UV light radiation.