The Tarred Robe is a quest reward available for Horde and Alliance characters. The quest takes place in Un’Goro Crater.

In order to get access to this quest, in particular, you need to complete some other quests in the area.
If the NPC does not talk to you, don’t give up.
You may or may not have completed that quest already. To find out, simply use a quest checker like Icy Veins

• Tarred Robe