In 1985, optical engineer Dr. Mitch Ruda, working on a project for NASA, made a groundbreaking discovery: using the protective coatings of satellites to defend the eyes from sunlight. This brilliant insight gave birth to Revo. The Air 3 model, with a rectangular-shaped metal frame, is the perfect combination of style and functionality. The lightweight, durable design offers an elegant fit and adapts to changing light conditions to ensure optimal visibility and safety. DETAILSPRODUCT:Gender: UnisexShape: RectangularMaterial: MetalColor: 00gnp Satin GrayCaliber: 58Bridge: 15Rod: 135