Sporty performance al-mag polarized sunglasses

Trooper style (3722PCP) Dark gunmetal 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. case included unisex