Aeger's Hide

Aeger's Hide is enchanted hide armor +3. Like normal hide armor, this armor has negative armor modifiers to stab and slashing attacks, but it has an armor class 3 points lower. With a weight of 35 lbs, it's 10 lbs less in weight. Aeger's hide provides immunity from confusion and a 15% bonus to fire, cold and acid based damage. This item appears in Baldur's Gate II: Shadows of Amn, where it's sold at the Adventurer's Mart by Ribauld in Athkatla Waukeen's Promenade.

In-game description
"This heavy and thick bear hide is all that remains of the fabled Aeger. Several hundred years ago the Aeger, a giant bear, terrorized hundreds of small villages up and down the Sword Coast. The bear was invulnerable to fire, cold or acid. Finally the young men and women of several villages banded together, forming a militia almost two hundred people strong.  The Aeger was surrounded and finally slain. Less than a dozen villagers survived, and they carved the Aeger's hide amongst themselves. Out of one of the pieces this armor was created."