Perhaps you can help by uploading and adding a picture or two.
Blue Vest is an armor in Chrono Trigger. It absorbs are water techs and converts 50% of that damage into Hit Points, while the other 50% is neglected. Within a Sealed Chest, a Blue Vest is found in Truce Inn and is the inferior form of Blue Plate.
|Chrono Trigger Armor|
|Hide Tunic | Padded Vest | Bronze Armor | Maiden's Suit | Iron Suit | Titanium Vest | Taban's Vest | Golden Suit | Ruby Vest | Dark Mail | White Vest | Black Vest | Blue Vest | Red Vest | Mesozoic Mail | Mist Robe | Luminous Robe | Radiant Plate | White Plate | Black Plate | Blue Plate | Red Plate | Platinum Vest | Aeonian Suit | Raven Armor | Ruby Armor | Taban's Suit | Zodiac Cape | Nova Armor | Reptite Dress | Dragon Armor | Gloom Cape | Moonbeam Armor | Saurian Leathers | Regal Plate | Regal Gown | Shadowplume Robe | Elemental Aegis | Prismatic Dress|