The size is 40, and the material is 100% wool. Only tried on, with tags, in excellent condition. Purchased at an authorized store. This is a popular item worn by many idols and influencers, and the design is very cute ♡ I bought it because I liked it, but I haven't had many opportunities to wear it, and I thought it would be a waste to leave it unworn, so I hope to pass it on to someone who will cherish it. I would be happy if you would consider it ☺️