Sporty performance al-mag polarized sunglasses

Pioneer style (3724PCP) charcoal black Aluminum-Magnesium are stainless alloy for optimal weight to resistance ratio, which is 50% lighter than titanium and best durability & lightness ratios of all alloy material. Polycarbonate Polarized lens are lightweight & impact resistance. They are treated with scratch-resistance hard coating with additional silver flash mirror & multi-layer anti-reflection lens treatment on the backside of the lens to enhance contrast. clam shell case included unisex