Vintage American Optical Z87 Flex Fit 6 Safety Glasses With Original Ao GLASS Z87 rated Safety lenses. Mint condition.  No cracks scratches or marks on frame anywhere . Lenses are flawless. Definitely an American classic vintage style and look that no one else can find. Ao glass lenses have no power in them. No scratches on them. SIZE 22[]50. 145 mm temple length. Frame measures 135 mm wide and 48 mm vertically. Made in the USA and built to last a lifetime. 4 barrel stainless steel hinges. Durable thick Italian Acetate.