Instant purchase is OK. This item was purchased in Dongdaemun, South Korea. I wore it once and washed it. There is no size listed, so I believe it is free size. I usually wear S or M size. The pocket part is fake, and the buttons are real and can be fastened and unfastened. It's barely noticeable, but the back of the collar is slightly discolored. Please note that it may wrinkle or crease as it will be folded small for shipping. Color: White系 Season: Spring/Summer