This is an M55 shirt that was issued to the Swedish military from 1955. I purchased it for about 9000 yen at a used clothing store in Sendai, and it's from the 70s-80s, and was new when I bought it. It's one of the most iconic sleeping shirts, and can be worn by anyone, regardless of age or gender. The length is long, reaching my thighs at 175cm. I've worn it a few times, and I like it because it's a shirt that allows you to enjoy the changes over time, but I'm selling it because I'm short on money. I will accept price negotiations.