Im guessing this is an Asian-sized clothing item, where you should order 2 sizes up. If I remember correctly, it was a one size fits all sweater. This is more of an accessory, no real warmth to it. Its beautiful and appears to be well-made. Its great for a take-along if your are wearing a sundress or a dressy sleeveless blouse to some event.  I guess you could also use it as a cover-up over your bathing suit.  I wear an American Medium, and this fits very snug, especially in the arms. But I get compliments when I wear it and it was very affordable, so overall, Im pleased with it.