Bracers of the Shuttered Lid

Sold by Nazramu, a djinn you "pulled" into your world using Spectacles of Spectacle during Zaviak's Vision Quest, used only by monks.

In-game description
"Rumor tells that a remote sect of monks, living in deep caverns beneath the Spine of the World, learned to fight in absolute darkness. The sound of their enemy's movement and breathing were enough for them to accurately target their blows. These bracers put their enemy on an even footing."