Anglo American 221 round glasses are a new introduction by Anglo American. The AA221 has a perfectly round lens shape. The frame is slightly thicker than the AA400 round glasses, but not as thick as the AA180 round glasses. At the moment, this frame only comes in one size, but is 11 different colors. Like all Anglo American round glasses frames, this frame is made with the highest quality italian Mazzuchelli zyl frame material.