This is an item from Felissimo's collaboration brand with Hamaji. I purchased it and have kept it stored without use, so I believe there are no particular issues. It's thin. You can wear it as a light jacket, or layer it with an inner like a pullover for various styles. It has a crinkled finish, and the X-shaped design makes you look slimmer. The sleeve length is about three-quarter length. The material is 100% cotton. It's labeled as size M, but please check the actual measurements below. Length: Approximately 77.5cm, Shoulder width: Approximately 37cm, Width under the armpits: Approximately 45cm, Sleeve length: Approximately 44cm (three-quarter length). Please ask if you have any questions. Please note that I may be slow to respond. I have other items for sale. If you win multiple items at the same time, I will reduce the shipping cost, so please let me know before you purchase.