Red Vest is an armor in Chrono Trigger. Wearing this vest boosts immunity to Fire magic by 100% and allows the wearer to absorb 50% of would-be damage. Any character can equip it. To obtain, open the Sealed Chest in Guardia Castle during the Middle Ages. An identical chest exists in the Present, when opened, Red Plate is obtained. If the player opens the chest first in the Middle Ages, the improved item is forever lost.