Chromapop Photochromic Red Mirror lens is an adaptive, all-weather snow goggle and lens technology that dynamically shifts its visible light transmission (VLT)—typically ranging from about 20% to 40%—to optimize contrast and clarity as light conditions change from bright sun to overcast skies.

chromapop photochromic red mirror lens for smith 4D - no box included, just goggle soc and lens.

Integrates light-sensitive photochromic molecules with ChromaPop contrast-enhancement to filter overlapping color wavelengths.

See pictures - item is new never used, photographed them and put them right back in gogglesoc so it does not have protective film on it. But as it does not the film it may have finger tip smudge. Does not have lens fog defect that some people encountered with the first generation.

Price new from smith is $180.