Today, cellulose acetate is one of the undoubted leaders among the materials used for the production of both frames and sunglasses. Frames made of cellulose acetate occupy, according to various estimates, about 70% of the market for plastic frames. In general, the market is dominated by milled frames, as they allow the use of a greater variety of shapes and colors. Laminated "multi-layered" models are very popular, which use multi-colored layers of cellulose acetate, whose plastic properties make it easy to make such "sandwiches" without fear of separation of the layers.