The Metal Brigandine Armour of the Rohirrim [20,+15]
+2 strength, dexterity. Provides resistance to acid, lightning, fire, cold, fear, confusion, sound. Cannot be harmed by acid, electricity, fire, cold.
Min Level 30, Max Level 100, Generation chance 33, 20.0 lbs

(Angband 3.1.2v2)