100% S2® MATTE TRANSLUCENT BROWN FADE HiPER® SILVER MIRROR LENS + CLEAR LENS INCLUDEDInspired by Speedcraft's legendary success on cyclings biggest stages, S2 is 100% speed that has been newly refined for everyday sports performance. MATERIALS 62% nylon 12 30% polycarbonate 5% Thermoplastic Elastomer 1% Stainless steel 2% Nickel Electroform w Chrome plating HIGHLIGHTS High impact resistant and lightweight polycarbonate lenses 5. 5 base cylindrical shield lens for increased peripheral view and protection 360 degree visibility for