I was hoping these would be similar to some very silky trouser socks I ordered here, but don't remember the name of.

They're not, but they're okay.  They have no defined foot, which is not a problem for me.  The fabric is not quite as thick as tights, but almost, so they won't be quick to run.  They come up to the top of my calf, which means they won't need to be folded down. They're pretty tight, probably wouldn't work for someone with a larger calf.

So they're okay.  But at this price, I wouldn't buy a single pair again, that is, unless I wanted a special color.