diff --git a/data/yaml/armor.yaml b/data/yaml/armor.yaml
index d1b8925..2c34f49 100644
--- a/data/yaml/armor.yaml
+++ b/data/yaml/armor.yaml
@@ -213,25 +213,37 @@ armorcategory:
 - Medium Armor
 - Heavy Armor
 armorgroup:
-- descr: TODO
+- descr: The armor is so flexible it can bend with a critical hit and absorb some
+    of the blow. Reduce the damage from critical hits by either 4 + the value of the
+    armor’s potency rune for medium armor, or 6 + the value of the armor’s potency
+    rune for heavy armor. This can’t reduce the damage to less than the damage rolled
+    for the hit before doubling for a critical hit.
   name: Chain
   source:
   - abbr: CRB
     page_start: 275
     page_stop: 275
-- descr: TODO
+- descr: The numerous overlapping pieces of this armor protect you from piercing attacks.
+    You gain resistance to piercing damage equal to 1 + the value of the armor’s potency
+    rune for medium armor, or 2 + the value of the armor’s potency rune for heavy
+    armor.
   name: Composite
   source:
   - abbr: CRB
     page_start: 275
     page_stop: 275
-- descr: TODO
+- descr: The thick second skin of the armor disperses blunt force to reduce bludgeoning
+    damage. You gain resistance to bludgeoning damage equal to 1 + the value of the
+    armor’s potency rune for medium armor, or 2 + the value of the armor’s potency
+    rune for heavy armor.
   name: Leather
   source:
   - abbr: CRB
     page_start: 275
     page_stop: 275
-- descr: TODO
+- descr: The sturdy plate provides no purchase for a cutting edge. You gain resistance
+    to slashing damage equal to 1 + the value of the armor’s potency rune for medium
+    armor, or 2 + the value of the armor’s potency rune for heavy armor.
   name: Plate
   source:
   - abbr: CRB
diff --git a/data/yaml/cleanyaml.py b/data/yaml/cleanyaml.py
index c5e43c3..e9732d5 100644
--- a/data/yaml/cleanyaml.py
+++ b/data/yaml/cleanyaml.py
@@ -3,23 +3,13 @@
 
 import yaml
 
-yfiles = ["actions.yaml",
-          "backgrounds.yaml",
-          "basics.yaml",
-          "bulks.yaml",
-          "conditions.yaml",
-          "damage.yaml",
-          "feats-levels-false-matches.yaml",
-          "feats.yaml",
-          "langs.yaml",
-          "monsters.yaml",
-          "requirements.yaml",
-          "senses.yaml",
-          "skills.yaml",
-          "sources.yaml",
-          "spells.yaml",
-          "traits.yaml",
-          "triggers.yaml"]
+yfiles = [
+    "actions.yaml", "armor.yaml", "backgrounds.yaml", "basics.yaml",
+    "bulks.yaml", "conditions.yaml", "damage.yaml",
+    "feats-levels-false-matches.yaml", "feats.yaml", "langs.yaml",
+    "monsters.yaml", "requirements.yaml", "senses.yaml", "skills.yaml",
+    "sources.yaml", "spells.yaml", "traits.yaml", "triggers.yaml"
+]
 
 
 def main():