Durable sports glasses from Oakley's "The Performance Collection". The extended upper visual field along with High Definition Optics give you great vision, and maximized airflow ensures optimum ventilation. Covered with a rubber layer of Unobtainium® over the nose bridge and temples to keep the glasses in place, even when you get sweaty. Equipped with Oakley's most advanced Switchlock™ technology that makes it quick and simple to change the lens, perfect for quick weather changes.