The Jujitsu Gi is a mid-ranked light armor in Final Fantasy XII that boosts the wearer's defense by 23 (Zodiac) or 20 (original), HP by 180, and—unusually for a light armor—Strength by 2. It is thus a good headgear for any physically-attacking character, especially in the Zodiac versions for License Boards that can't unlock heavy armor.
Obtain
Original
In the original PlayStation 2 versions, the Jujitsu Gi is sold for 3,200 gil in Rabanastre after defeating Judge Bergan, and in Mt Bur-Omisace.
The Jujitsu Gi is rarely stolen from the Skull Knight. It is made in the bazaar set "Monk's Garb" by selling four Coeurl Pelts (from the Coeurls), two Tyrant Hides (from tyrant enemies, e.g. Diresaur), and four Ice Magicites (from enemies on the Paramina Rift).
Zodiac
In the updated Zodiac versions, the Jujitsu Gi is sold for 3,200 gil in Mt Bur-Omisace, and is found in a treasure in Barheim Passage's East-West Bypass (90% chance to appear, 50% chance for gil, 50% chance the item treasure is the Jujitsu Gi without the Diamond Armlet equipped), and Paramina Rift's Icebound Flow (75% chance to appear, 50% chance for gil, 50% chance the item treasure is the Jujitsu Gi without the Diamond Armlet equipped), as well as in the Trial Mode Stage 72 with the Diamond Armlet equipped.
It is still a rare steal from the Skull Knight and made in the bazaar set "Monk's Garb" with the same items as before.
Use
The Jujitsu Gi is a mid-ranked light armor, giving 20 or 23 defense depending on version, and 180 HP, as well as 2 Strength. It is useful to equip over any inferior equipment the party may have. However, in the original version where everyone can wear any equipment piece, the more expensive heavy armor, Shielded Armor or Demon Mail, or the mystic armor Enchanter's Habit or Sorcerer's Habit, may be preferable purchases if the player can stretch their funds to them, as the HP boost from light armor is not usually worth prioritizing over heavy armor that boosts Strength for physical attackers, or mystic armor that boosts Magick Power for spellcasters. However, unusually for a light armor headgear, the Jujitsu Gi does also boost the wearer's Strength, though not as much as heavy armor.
In the Zodiac versions, Machinist, Monk, Archer, and Shikari can equip the Jujitsu Gi, and so it is only useful to buy if the player has chosen these License Boards for their party. The Strength boost from the Jujitsu Gi does not matter for a gun-wielder, but would be beneficial for the other jobs. In The Zodiac Age, after fighting Belias, the player can choose two License Boards per party member, and so more party members can choose from the potentially more useful heavy and mystic armor sets.
Etymology
Jujutsu is a Japanese martial art and a method of close combat for defeating an armed and armored opponent in which one uses no weapon or only a short weapon.
Gi is Japanese for "dress" or "clothes".