Type: Racial
Source: Races of Stone
You are familiar with exotic armor of dwarven manufacture and understand how to use it properly.
Prerequisite: Dwarf, Armor Proficiency (heavy).
Benefit: You are proficient with battle plate, interlocking plate, interlocking scale, and mountain plate, and you take no armor non-proficiency penalties when you wear any of these types of exotic armor.
Special: A fighter may select Dwarven Armor Proficiency as one of her fighter bonus feats.
Normal: A character who wears exotic armor with which she is not proficient takes its armor check penalty on attack rolls and on all Strength- and Dexterity-based skill checks.