'Robes' in the Bible

So I called the priests and made them take an oath to fulfill this promise. I also shook my robes, and said, "May God shake out every man from his house and his possessions who does not keep this promise. May he be emptied out and shaken just like this." All the assembly said, "Amen!" and praised the LORD. And the people kept their promise.

And some of the heads of families gave money for the work. The Tirshatha gave into the store a thousand darics of gold, fifty basins, five hundred and thirty priests' robes.

And that which the rest of the people gave was twenty thousand darics of gold, and two thousand pounds of silver, and sixty-seven priests' robes.