Muji's Washed Oxford Shirt Jacket, L size. Measured flat, the shoulder width is 58cm, the body width is 63cm, and the length is 77cm, making it an oversized design comparable to XL. It's a navy shirt jacket made of 100% cotton, similar to canvas, and slightly thick. Besides the chest pocket, there are slash pockets on both sides, so I think it can be worn as a jacket or as an inner shirt. The buttons are snap buttons. Please consider it.