I think I know what's happened here. One of their factory machines went rogue and started knitting stockings that were 5 times as wide as they ought to be.
So, rather than waste the material, some canny soul is attempting to style it out by marketing the Frankenstockings as an entirely new type of garment.
If this doesn't work, they'll try touting them to the fishing or windsock industries.
Waste not, want not.