Designed with performance in mind, Sutro gives cyclists a bold and versatile look that they can confidently wear on and off the bike. Fit & Design: Durability and all-day comfort of lightweight O Matter(TM) frame material Unobtainium(TM) nosepads increase grip with perspiration to help keep the eyewear securely in place Prizm(TM) lenses are designed to enhance color, contrast and detail