Improved Natural Armor

Type: General
Sources: Monster Manual
Monster Manual III
Races of Faerûn

Your skin is even tougher than that of most of your kind.
Prerequisite: Racially granted natural armor
Benefit: Your racially granted natural armor bonus increases by +1.
Special: A character can gain this feat multiple times. Each time the character gains this feat, his natural armor improves by an additional +1.