Acetate is the most common material used for frame manufacturing. It has endless possibilities for color texture and patterns. It can even be laminated to create great visual effects and it can retain a higher luster. Acetate is lightweight so it is often chosen for its versatility in coloring as well as for its comfort. Acetate is made out of cotton seed fibers and plasticizers.This model features an Oval shape with a Single Bridge.This frame features a spring hinge which keeps its initial balance and adjustment thereby avoiding the need for subsequent adjustments.