They were "King-size" which suggests to me 50s/early 60s marketing. We’d buy them occasionally to go with onion or blue cheese dip, but they didn’t have the delicate quality of original Fritos.
The scoops are pretty bad. They truly do scoop up dip, too much dip. The curved shape cuts into the mouth. And the name reminds me of "Soylent Green" (and we all know what that is, don’t we?) [:0]