This model (OO9510) by Oakley is a performance sunglass built for smaller faces, including high-coverage lens profiles from the original Radar line, but in a more refined size. The frame is constructed from lightweight O-Matter-the thing that makes it far more durable, as well as a very comfortable fit for all-day wear. Unobtainium nosepads and earsocks fit even while sweating or moving fast. There are several lens options, like Prizm and Prizm Polarized, that enhances contrast and clarity so one picks up more detail in bright or changeable light.