These are skintight, in mesh (fishnet) and with lace trim at the bottom.
You can eventually buy a layerable skirt* (shown in the example is the ripped skirt (layerable)(click) ) to wear with it.

* this does mean layerable, not just any skirt, you the-only-time-I-take-the-effort-to-leave-a-review-is-to-whine-about-something-that-was-clearly-stated-in-the-description people.. <_<