This is a thin knit sweater from Rope Picnic, perfect for early spring ( ´ ▽ ` ) The sleeves are slightly sheer and gathered, which is very cute. The size is 38, which is a Japanese M size, but it feels a bit small when worn, so I think it would also fit a Japanese S size. It will be shipped folded up small. Please forgive any folding wrinkles m(_ _)m