The sizes are really small, do not think about your regular clothing size, this sizing has nothing to do with it. Read reviews and see how others have decided on the size and you will be more likely to succeed getting the right size. Also refer to sizing chart.
I wish the lacing on the back was not continuous and silky... it needs a bit more traction so it does not slide open on its own. Very unpleasant when it happens, otherwise like tying it in the middle of the back, but there needs to be two seperate laces for the ease of tying it.