https://www.nma.gov.au/explore/features/cook_forster/objects/sling_sinka_am15

leather, animal sinew, Tierra del Fuego, l. 165 cm, 15 cm (pouch), Inv. Am 15

Two three-ply, plaited cords made of sinews are affixed to the opposite ends of a diamond-shaped pouch, the latter made of brown leather and with traces of red pigment. One of the two cords is 5 cm longer than the other, and both end in ball-shaped bulges for a secure grip.