A vest favored by many Shinra troops.Description
The first chance to get one is in Chapter 3, "Home Sweet Slum", from the weapon shop once it opens as part of the story, where it costs 800 gil. It can also be found in a treasure during Chapter 7, "A Trap Is Sprung", in a chest just before the ladder to reach the reactor core, at Reactor Core Lower Level - Left-Side Bridge on B7.
In "Episode INTERmission", it can be bought from the Sector 7 Slums weapon shop and from vending machines thereafter since the start of the episode.
The accessory is good to equip on vitality-focused character like Barret to make him even better at tanking damage, or on a weaker party member like Tifa to help her survive better. The Bulletproof Vest is later outclassed by Survival Vest bought from Wall Market. In INTERmission, the superior equipment is already available at the same time as the bulletproof vest.