Fake jeans that are actually leggings are gross. But super thin real jeans that can easily tuck into boots are awesome! My calves are such that when put in boots there is not much room left for jeans of normal thickness, so instead of pouting about not being able to wear boots over jeans, I have these J Brand Denim “Leggings”. They are jeans in every way except wafer thin. They are stretchy and oh-so comfortable!! I have 2 pairs in gray and dark denim and they take turns being on me. At Net-a-Porter