ArmourSight® lens technology delivers up to 20% more undistorted peripheral vision & are up to 10X stronger than ordinary polycarbonate lenses. A hand-finished and built with durability and comfort in mind. this flat top silhouette combines super-duty spring hinges and clean style lines for the ultimate blend of performance precision and fashion. Ua frame technology-armourfusion flex frames retain shape w/titanium-grilamid for comfort/durability. Zeiss lenses is an industry leader, that for more than 100 years, has tested and delivered best-in-class lenses for sports optics.