Sackcloth

Sackcloth was a clothing material from which robes could be made. In exile on Ahch-To, the Jedi Master Luke Skywalker wore robes made of sackcloth underneath a woolen cloak.

Appearances

 * Star Wars: Episode VII The Force Awakens
 * Star Wars: Episode VIII The Last Jedi
 * Star Wars: The Last Jedi: A Junior Novel