Frame: Gloss BlackLens: Neutral Grey-Offers the highest available light reduction for the richest colors and sharpest contrast.Lens Material: Polycarbonate - A proprietary, silicone-based hard coat that protects your lenses. Glass is naturally scratch resistant but polycarbonate lenses perform better longer with the added durability of our optically correct CLEARSHELL.Rx Power Range:+3.00 to -4.50