This product came up as a package I bought previously but they were not the exact same.  They are a nylon type but full brief, which I want them to wear under knit summer dresses so as long as they are nylon they will move over my panties.  It can be difficult to find nylon underwear so i'm not super surprised that it's hard to get the exact same.  These work for me even though they weren't technically what I ordered.