This is a Louisville Slugger baseball jacket. The size is S in American sizing, which is about a Japanese M. I bought it in San Francisco in the 1990s. I remember it cost around $300 at the time. I haven't worn it much, so it's been sitting in my closet. I'd like to pass it on to someone who needs it. It's a vintage item, so if you like 1980s and 90s fashion, would you be interested?