GAP XS 100% Cotton Since this is a foreign size, it should be about a size M in Japan, but it's quite large. The seam on the back and the lace on the sleeves are accents. It's see-through, so it's recommended for summer. Shoulder width / Body width / Sleeve length / Length Shoulder width...47cm Body width...47cm Sleeve length...59cm Length...60cm Color...Navy系 (Navy-based) Material...Cotton Color/Neck...Regular collar Transparency...Sheer Season...Spring/Summer Stains, tears, odors, etc....None