This is a long-sleeved shirt from Saint James. Saint James has been upholding its tradition for over 100 years, and its timeless style and high quality, unaffected by trends, are loved by people all over the world. The French headquarters factory carefully selects high-quality materials and manufactures them using traditional methods and modern management systems, consistently maintaining a high level of quality. The size is 4PON in French sizing. It is likely a Japanese M. Measurements taken by a layman: Shoulder width 42cm, body width 50cm, sleeve length 58cm, length 65cm. The material is cotton, and it is jersey-like, so it has elasticity. I have only worn it about 10 times, but it is a product from over a decade ago and has been stored at home for a long time, so it has a corresponding degree of wear and tear.