Designed with performance in mind, Sutro gives cyclists a bold and versatile look that they can confidently wear on and off the bike.   PRIZM™ Prizm™ is a revolution in lens optics built on decades of color science research. Prizm™ lenses provide unprecedented control of light transmission resulting in colors precisely tuned to maximize contrast and enhance visibility.   Features Durability and all-day comfort of lightweight O Matter ™ frame material. Unobtainium ™ nosepads increase grip with perspiration to help keep the eyewear securely in place.. Prizm ™ lenses are designed to enhance color, contrast and detail..