These were a gift from my husband (so I don't know the password for this review). The fabric is excellent- extremely comfortable. I love that the pockets are smaller- it makes the baggy look a touch more elegant.
I am 5'4" and the medium hits at my ankle bone. I weigh 109 lbs and have a pretty straight build for a white person. I did not use the size chart. Instead I just told him to get the medium (size 66) since I think I have approximately the body of an average Korean woman- I'm skinny by US standards but probably not by Korean standards.