When wearing jeans with booties, an exposed ankle is key to keeping your ankles looking as slim as possible. (babble.com)
My daughter informed me years ago, you don't wear a jean jacket with jeans! (modernmrsdarcy.com)
They are definitely not leggings, but they have a nice solid feel to them and would be great for a work environment to get away with wearing jeans in a more formal way. (moretomrse.com)