Unisex design; 6 Base Melanin Infused CR39 Lenses: Melanin infused; The CR-39 monomer lenses feature the optical clarity of glass with the durability of a thermoset material; These lenses are light weight and stand up to scratches; 6 Base Mazzucchelli Acetate Frame: Nylon based plastic that is hypo allergenic; 5 Barrel hinge; Heat tempered wire temple inserts; Hand crafted in Italy, designed in California; :: Men > Sunglasses Size: one size.