Chainmail

Chain Mail, also called Chainmail, is a recurring armor in the series. It is often a mid-ranked armor that is used by heavy melee classes such as Warrior and Dragoon, and usually provides decent defense. It often does not provide any additional bonuses.

Final Fantasy
Chain Mail is a low-ranked armor that is used by Fighter, Knight, Red Mage, and Red Wizard. It provides +15 Defense, +15 Weight, and is bought in Cornelia, and Pravoka.

Final Fantasy IX
Chain Mail is a low-ranked armor for Steiner and Freya. It provides +12 Defense and halves Earth elemental damage, and teaches the abilities Bird Killer and HP +10%.

Final Fantasy XII
Chainmail is a mid-ranked armor that requires 30 LP to use, costs 2500 Gil to buy, and provides +16 Defense and +3 Strength.

Final Fantasy Tactics
Chainmail is a low-ranked armor that can be bought in Chapter 1 for 4000 Gil and provides +40 HP.

Final Fantasy Tactics A2: Grimoire of the Rift
Chainmail is a low-ranked Light Armor that teaches the ability Counter. It provides +28 Defense and +4 Resistance.