Strømpelegg! Part or all of this word translates from Norwegian as stocking leg, that is the leg portion of a stocking. I'd been hoping to find online images of the Viking-age språng stocking found at Tegle and now I have, through the Norsk Folkmuseum using the search word Teglefunnet. There's even a schematic diagram of the S and Z twist språng triangles.
ETA: I originally had strømpelgg from the catalogue description but I think that was a typo.