Your preferred sets of armor are not unlike a second skin to you, letting you move just right to deflect your enemy’s attacks.
Prerequisites: BAB +8, Armor Focus, Armor Specialization, Greater Armor Focus
Benefit
When wearing armor in the weight class selected for Greater Armor Focus, the damage reduction from Armor Specialization increases to DR 3/-. This stacks with any other damage reduction of the same type, such as the armor being made of adamantine, or that granted by class abilities or racial traits. Also whenever an enemy makes a critical threat, your AC is treated as 4 points higher when rolling to confirm.
Special: You may take this feat multiple times. Its effects do not stack. Each time you take this feat, you apply it to a different weight class of armor.