I'm 16 but 4'10 so I'm quite short. I wear women's sizes 6 and 7 and Large fits me perfectly. I was a little disappointed they weren't above my knee but I'm perfectly happy they were just below my knee. It is of great quality and very comfortable. They hug my calves so I'm not worried about them falling or slipping off. I recommend buying them because they are fantastic and now I can wear skirts and shorts and my feet don't get cold.