Vintage Hexagonal Sunglasses Military Tactical Aviator Air 。Precision Crafted - Military Grade - Vintage Aviator Sunglasses by Air Crew. The gold geometric hexagon frame design with tortoise shell temple tips is the PHANTOM 51081 model. Excellent new condition with manufacturers sticker, no scratches. Obvious attention to detail and design. High quality, not light weight & flimsy. You can feel the solid craftsmanship when you open and put them on. Approximate measurements are as follows: 5” across front 1\" across the nose bridge 5.5” side arms History: These high quality, vintage aviator sunglasses were manufactured in 1991 to meet or exceed military specifications by a top name manufacturer located in Randolph, Massachusetts for American Eyewear USA. This company was contracted in the 1990\'s to manufacture these glasses for American Eyewear to be sold under the Air Crew brand. Additional Product Details: Non-polarized lenses, true to military specification. Tempered glass lens. Full color spectrum of non-distorted colors. Maximum scratch resistance & visual clarity. Maximum UVA,UVB, UVC and infrared protection. Visible light transmittance of 20% for optimum eye comfort. Sleek spring hinges for the highest quality integrated onto the temple.