Alchemist Armor Mastery (Level 19)
Your skill with light and medium armor improves, increasing your ability to dodge blows. Your proficiency ranks for medium armor, light armor and unarmored defense increase to master.
Pathfinder 2e Database
Your skill with light and medium armor improves, increasing your ability to dodge blows. Your proficiency ranks for medium armor, light armor and unarmored defense increase to master.