This is a matching sunglass clip for the AA406 frame. The clip is not made by Anglo American. It is made by a custom maker of sunglass clips, in the U.S. The clips are made in dark brown with brown lenses to work the brown frames, and black with grey lenses for the crystal and other colors of frames. Each clip features polycarbonate lenses, but polarized lenses can be used for an additional $40 (call customer service to order polarized).