Bangdian is a woollen apron worn with Tibetan dress. Its narrow horizontal stripes gather many colours into a compact surface. The national heritage account associates this weaving tradition particularly with Jêdêxoi, also written Jiedexiu, in Gonggar County. The town lies on the southern side of the Yarlung Tsangpo.
The apron is both an object of dress and a textile with a history of making. Its pattern can be recognised at a glance, but the coloured surface begins with several stages of work. A local cultural-tourism account describes more than a dozen operations from spinning wool through dyeing to weaving.