Thank you for viewing! I purchased this from a place called Tanpopo House a year ago. It's a 7/10 sleeve and thin, so you can wear it on its own, and it seems like it would be useful even in the summer! It has a fitted feel when worn by someone 163cm tall. I've washed it many times, but the decorations haven't come off. The buttons look like they might come off, but they seem like they could be reattached.