You'll often see armbands in cabaret belly dance costumes, but they are much less used in Tribal belly dance.  In general, if Tribal dancers want to cover their arms they will choose a choli top, or make their own by cutting up a pair of black or fishnet tights.

I have seen some gorgeous armbands with long, flowing silk extensions which would be great for Tribal - but I haven't managed to find a supplier for them yet.    So I'm sorry if we don't have many listings for armbands right now.

Tribal Belly Dance Armbands on eBay