Tzu-Zan's Bracers

Tzu-Zan's Bracers are a pair of bracers which only monks can wear. They give the wearer a armor class bonus of -1 and 15 extra maximal hit points. This item appears in Baldur's Gate II: Throne of Bhaal and Baldur's Gate II: Enhanced Edition. It's not known where these bracers can be acquired.

In-game description
"Although monks traditionally shun armor, these gauntlets of Grand Master Tzu-Zan are highly sought after by the practitioners of weaponless combat."