I was a little hesitant buying these after reading other reviews. I am 5'4 and about 135lbs but I have very big hips so I bought the large. Some of the reviewers said they were tight on the legs, loose on the hips and what not. I didn't have either of these problems. They pulled on just like a pair of regular tights and after a little adjusting they were perfect. I'm glad I bought these and not the other pair I was looking at.