A pair of cheap and leathery straps for that rucksack that just happens to lack them (a common problem surely?). Even if these wouldn't fit straight, you can likely tailor them a bit if you have even rudimentary skills of hand.
Gray-brown-greenish piece of leather cut into a form of rucksack straps, with an attachment piece in the center. Meant to be secured around a large D-ring with using the brass knobs to make a loop around it. On both ends there's an openable adjustment, which when closed, forms a tunnel loop. On the other end there's a metal D-ring meant to pair up with a quick-release hook. So, the starting point for your own creations is about right.
The Italian origin certainly shows itself: the leather is a tad thin for military gear (the thickness of course varies slightly from pair to pair), the workmanship is utilitarian. The quality is OK for the intended use, which is carrying a food tornister. For daypacks these would be perfect!
Unissued, having been only spare parts. This does not mean that they're new; they might have various signs of long storage and we strongly suggest greasing them before use, like all old leatherware should be. But they're sooo cheap, you could even purchase them for the brass knobs only, which fit on many weapon slings for instance. The metal D-ring shown in the pictures seemed to be there in most specimens, but we reserve the right to say it could also be missing.