This is American Apparel's new $72 "Riding Pant."
The difference between these and just a regular pair of spandex high waisted pants is the faux knee patches and the fact that they come in tan. Personally, I think that the way they present this classic look, looks rather sloppy, unsophisticated and unflattering, things I don't usually associate with riding apparel.
These are the two colors displayed on the AA website.
This is an image from a look book. It looks sloppy, and shows two totally different styles. Housewife meets equestrian done WRONG.