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Armor Mastery

Class: Fighter 8, 12, 18

Armor Mastery applies only while the Fighter wears armor they are proficient with (see Armor Class Components).

Fighter level Effect
8 Reduce that armor’s Armor Check Penalty by 2 (minimum 0). Increase the maximum Dexterity bonus the armor allows by 1.
12 The speed reduction for wearing Heavy armor (see Movement and Encumbrance) no longer applies to the Fighter. The Armor Check Penalty reduction above increases to 4; the maximum Dexterity bonus increase above increases to 2.
18 That armor’s Armor AC component increases by 1. This is a Supernatural bonus and stacks with the armor’s own Armor AC value.

Related: Fighter · Master of Arms · Armor Class Components