I love the idea of this shrug, but... the sizing IS a tricky.  I read the reviews, the comments from the vendor, checked out the sizing chart, and ordered a size large.  (I'm 5' 8", have skinny arms, but broad shoulders.)  It comes down past my wrists, which some people might like -- I don't -- and buckles slightly at the back, but not too badly.  If I were to order again, I'd get the medium.  But I won't order again because the fabric makes my arms itch.  Even if it didn't, it's not particularly warm.