TOUGHNESS
Type: Combat, General, Tier 1.
Prerequisites: Con 13.
Benefit: You gain Damage Reduction/- equal to 1/4 your level or your Constitution modifier, whichever is lower.

IMPROVED TOUGHNESS
Type: Combat, General, Tier 2.
Prerequisites: Con 15, Toughness.
Benefit: Your DR from Toughness improves to 1/4 your level or your Constitution modifier, whichever is greater.

GREATER TOUGHNESS
Type: Combat, General, Tier 3.
Prerequisites: Con 17, Toughness, Improved Toughness.
Benefit: Your DR from Toughness improves to 1/4 your level + your Constitution modifier.