Women eyeglasses frames are typically made of either metal or a type of plastic called cellulose acetate. Cellulose acetate is derived from cotton and is flexible and strong. It is produced in long narrow sheets that are slightly wider than eyeglass frames. The sheets are up to 3 ft (0.91 m) long and 0.33 in (0.84 cm) thick.http://www.finewelleyewear.com..../optical-eyewear/ace