Feat > Natural Defense (Description needs Toughness wording added)

[ucffool]

When you are not wearing armor, you gain an armor bonus to your Guard defense. Your armor bonus is determined by your tier in this feat:

This should be revised as follows:

When you are not wearing armor, you gain an armor bonus to your Guard and Toughness defenses. Your armor bonus is determined by your tier in this feat:

[brianfeister]

Thanks @ucffool. Fixed.