CampCo HUMVEE HMV-52B-BLACK&nbsp;Polarized Bayonette Style Military Sunglasses with Gray Lenses and Black Frame, 52mm Protect your eyes from the sun's harsh rays 52-millimeter, bayonet style frame with a black finish Made of high-nickel copper alloy with high frequency welding and optical plating Grey polarized lenses reduce glare for better color, clarity and detail Comes with a 1-year limited warranty