I love these, soft, nylon, they are super cute, they slip down a bit and they tend to make my other pants slip a bit.
they fit nicely. and are very pretty,
decently made.
I think it's the nylon material. not a cotton crotch (if is you can't TELL it is)
not  too tight on legs, or gut, cover my rear but they do slip at the top and your crack will peek out .. I pull them up a lot (it could be that I'm a larger woman.. I got them in XL and they FIT but as I said, they slip)