We have sourced a very limited number of these Tibetan nomad slings from a seller on the side streets of Boudha in Kathmandu. Each of them are between 50”-60”, woven from sheep wool and yak wool (or blend). They each have slight differences as they were not mass produced.
Maybe you need a new sling to practice with? Or maybe you need it as a samaya object? This is a ritual object prescribed in some practices such as the Achi Pure Vision practice in the Drikung Kagyu Lineage.