Armor that provides excellent protection.
The Shield Armor is a mid-ranked armor that can only be equipped by Steiner, Freya, and Beatrix. It provides +23 Defense, +5 Magic Defense, teaches Distract, and halves damage from Fire, Ice, and Thunder-elemental attacks. It can be bought for 4,300 gil at Esto Gaza and Ipsen's Castle, or found in Oeilvert, the Desert Palace, or as a treasure in the Faraway Lagoon Chocograph.
In the original version, Shielded Armor is a mid-ranked heavy armor that provides +24 Defense, +5 Strength, and Auto-Protect. It can be bought for 4,000 gil at Rabanastre, Jahara, and Mt Bur-Omisace, and requires the Heavy Armor 4 license for 35 LP to equip.
In the Zodiac versions, Shielded Armor now provides 25 Defense, +5 Strength, grants Protect, and requires the Heavy Armor 4 for 40 LP. It can be bought in Eruyt Village and Mt Bur-Omisace for 3,800 gil, found as a treasure in Henne Mines (Starboard Section), Paramina Rift (Freezing Gorge) and Trial Mode Stage 67 (with Diamond Armlet), stolen from Imdugud in the main game (3% chance) and Melt (10%) in Trial Mode Stage 12, and bought from the bazaar for 4,850 gil after selling Wyrm Carapace x2, Quality Hide x2, and Earth Magicite x4. It can be equipped by the Uhlan, Knight, Time Battlemage, and Foebreaker.
A set of armor brought from the faraway world of Ivalice. These armors offer high defense, and are easy to obtain, so many adventurers treasure them for their wear. The armors are also traded often in market, but unlike other armors, these are often sold bundled with other items, so be wary of this when you're looking to purchase only the armor.
Shielded Armor is a Heavy Armor obtained from the Final Fantasy XII exploration event, Nam-Yensa Sandsea. It provides 52 DEF.