This is a 3/4 sleeve long-sleeved T-shirt from Ron Herman! I bought it at Ron Herman in Kobe for about 30,000 yen! The size is M, but it may fit like an S, M, or L depending on your body type! It's a bit oversized, so I think it can be worn by people of various body types. It's easy to use, as you can wear it alone in spring and autumn, and as an inner layer in winter! I am 168cm tall and weigh 63kg, and I wore it with a slightly oversized fit!