Michael Kors Sunglasses Zermatt MK2079U 333313 61 is a polished dark tortoise and gold frame with a brown gradient lens and is designed for women. It is a xtra large style with a 61mm lens diameter. The bridge size for this model is 17mm and the side length is 140mm. This adult designer sunglasses model is a metal & plastic, full rimmed frame with a square shape.