75 25 light transmissionredesigned for more versatility than ever beforeclear to smoke transition takes you through the day providing maximum clarity comfort and protection for your sport from dawn to duskblocks 100 uvauvbfototec lenses with variable tint technology t v adjust rapidly to changing light conditions for superior clarity and protection in bright sun microscopic photochromic particles embedded in the lens react to uv rays darkening the optics so you39ll never squint the