DISTRICT VISION KEICHII PERFORMANCE EYEWEAR Eyewear, Style 3197 District Vision Keichii is performance eyewear that is sport’s ready and beautifully crafted. What was the result of a 2-year study and development period in Japan comes a featherweight (23g) polarized lens that is focused on varying athletic conditions. The glasses come in 3 colors white, gray or block with three activity specific lenses: a yellow polycarbonate lens made for low light conditions,a polarized gray lens with oleophobic coating for watersports and a green tinted sky G15 lens provides protection from bright sunlight allowing only 15 percent of light to pass through. These lenses will set you back #300+ dollars but are worth the price tag. Visit the District Vision store here