When protecting your eyes is of the utmost importance, Oakley's Standard Issue Ballistic M Frame 2.0 Replacement Clear to Black Photochromatic Lens has you covered. Whether you're replacing your lenses that have seen better days, or just switching them up for something different, this replacement lens makes it quick and easy. Features of Oakley SI Ballistic M Frame 2.0 Replacement Clear to Black Photochromatic LensMade with Ballistic Polycarbonate MaterialPermanent Anti-Fog Lens CoatingClear to Black Photochromatic Lens Provides 23% Visible Light TransmittanceClear Base Lens Color Oakley SI Ballistic M-Frame 2.0 Replacement Photochromic Lens 11-198