A method for treating a sulfur-containing fabric and sulfur-containing fabrics with excellent antimicrobial properties are disclosed. The ring body 11a is formed of a plastic magnet, and has a cushion member made of an elastic body that is interposed between the ring body and the outer peripheral surface. Each reflection type display device is composed of a barrier element consisting of a group of small liquid crystal shutters arranged two-dimensionally, microlens elements two-dimensionally arranged corresponding to the liquid crystal shutters, and a reflective surface of the reflective substrate, and wherein the reflective surface is positioned on the focal plane of the microlenses.