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