This HUD bar shows a percentage and will only be displayed if you wear at least one piece of armor. A percentage of 100% means your armor is in perfect or near-perfect condition, and 0% means your armor is completely destroyed (not displayed by default). Also you need to wear at least 4 different pieces of armor to reach 100%. Note the percentage only denotes the armor's condition, not its quality or strength.
Armor HUD bar
Adds a HUD bar displaying the current damage of the player's armor.