Sackcloth was Worn: Frequently Next the Skin in Deep Afflictions
Source: TTT
1 Kings 21:27
When Ahab heard these words, he tore his clothes, put on sackcloth, and fasted. He lay down in sackcloth and walked around meekly.
2 Kings 6:30
When the king heard the words of the woman, he tore his clothes. And as he passed by on the wall, the people saw the sackcloth under his clothes next to his skin.
Job 16:15
I have sewn sackcloth over my skin; I have buried my horn in the dust.