The waistcloth or loin-cloth was different than the girdle. The waistcloth was a strip of cloth or leather that was wound several times around the waist with the ends hanging down over the thigh. This sketch reveals someone from 701 BC of the city of Lachish. It is from a relief of Sennacherib discovered at Nineveh. The prophet Jeremiah said that the northern Kingdom of Israel would be destroyed: Jeremiah 13:10 "and shall be like this waistcloth, which is good for nothing"
Waistcloth in Ancient Bible Manners and Customs
Ancient Images
Bible History Online