Ugly Fish Slim R 04282 Frame:- * Matt Black * Eight Base Medium Impact TR-90 compound Lens Type * Low Impact Polycarbonate * Impact Resistant Polycarbonate. * Lens Coating: Anti Scratch & Anti Fog Lens Colour - Smoke Grey The smoke lenses are most effective in darkening unwanted bright conditions and eliminating unwanted glare most effectively. This lens does not change the visual colour due to its neutrality.