I tried these based on the reviews of others.  All I can say is that the top rolls down and they are "just okay"  I was trying to wear them under slacks and they really made the fabric cling in an odd way.  My slacks looked really funny, especially around the crotch.  I guess it's tricky to find any of these shapewear things that you can wear under slacks, but I think the fabric needs to be slinky on the outside like a slip or it will make the slacks cling.  Maybe these would work under slacks with a lining, but since the crotch tends to sag, I doubt it.  These are kind of like cotton tights with the feet cut out.  The waistband needs to be wider if it isn't going to roll.  I think the legs people just took their standard pantyhose and tights design, made it a little more supportive and then cut the feet out and put a band around the bottom.  The bottoms didn't roll up much, though, so that is a plus.