American Optical Vintage Flex Fit 6M Safety Glasses with Original Ao Tinted lenses in them. Frame is in exceptional  condition with NO cracks scratches or marks on it. Hinges screws temples all tight and straight. 1960s era vintage. Right lens has light polishing marks on it from cleaning the lens with a shirt or cloth. Otherwise in very exceptional  condition. Size 52[]22, 145mm temple length. Made in the USA. Frame measures 5 1/2" wide.