Introduced in 1937, the aviator gets its name from the aid it provided US Air Force Pilots with decreasing glare in flight. It has an iconic design that will last and last for years to come, plus a durable and lightweight metal frame, 100% UV protected lenses, and comfortable rubber nose pads. materials: Metal frame. Crystal lens. measurements: Bridge: 17mm. Arm: 130mm. item details: 100% UV protection. Case included^Lenses are prescription ready (Rx-able) country of origin: Italy.