This is an American size S, so it should fit like a Japanese size M. Shoulder width: approximately 40cm Sleeve length: approximately 60cm Body width: approximately 46cm Length: approximately 39cm The white yarn is coming out of the right sleeve, but it was like this when I bought it. I've only worn it a few times, but there is some fuzzing. Please refrain from purchasing if you are sensitive to used items, as this has been stored at home.