Bracers of Perseverance

Bracers of Perseverance is sold by Kazzrem in Sorcerous Sundries in Chapter 7.

In-game description
"Each of these soft leather bracers, dyed gray, displays the embroidered figure of a boar in shimmering red thread. The bracers were crafted by a monk of the Black Raven Monastery who took longer to achieve mastery of her art than her peers, but reached her goals eventually."