This is the ADAM ET ROPE 3-way shirt & vest combination trench short coat. It's a long name, but it's a product layered with a shirt with trench coat-like cuffs and a vest with a trench coat-like design on the back. In other words, it can be worn in 3 ways: as a shirt alone, as a vest alone, and layered as a short trench coat. The overall silhouette is oversized, and the material gives it a loose style. The shirt has belted sleeves and can be worn like a blouson on its own. The vest has a long length and can be layered with cut-and-sews or shirts. When combined, it can be worn as a short trench coat-like blouson. The size is M, but as mentioned above, it's oversized. When measured flat, the vest has a width of 68cm and a length of 79cm. The shirt has a shoulder width of 49cm, a width of 57cm, and a length of 76.5cm. I think it can easily accommodate a size L. This is a highly designed product. Please consider it.