Armor Runes

Utility

Armor Property Runes

Property runes add special abilities to armor or a weapon in addition to the item’s fundamental runes. If a suit of armor or a weapon has multiple etchings of the same rune, only the highest-level one applies. You can upgrade a property rune to a higher-level type of that rune in the same way you would upgrade a fundamental rune.

— Core Rulebook pg. 582 2.0