... :medium and high grade lady's frame ,man's frame ,kid's frame and unisex frame .2. ... Materials:stainless steel, metal memory ,plastic memory ,acetate ,sillicon ,aluminium,copper.cupronickel ,monel,high nickel.3 ... produce optical frame suach as lady's frame ,man's frame ,kid's frame and unisex frame .we ... about us . good design spectacle ,hand made material optical frames