'Undergarment' in the Bible

When I heard this, I tore my clothing and my robe [in grief], I pulled out some of the hair from my head and my beard, and sat down appalled [at the shame of it].

At the evening offering I arose from my [time of] humiliation and penitence and having torn my clothing and my robe, I fell on my knees and stretched out my hands to the Lord my God,