Armored Vault 101 Jumpsuit

The Armored Vault Suit is, as the name suggests, a version of the regular Vault-Tec Vault Suit modified to better protect its owner in combat.

Appearances
The armored version of the Vault Suit first appeared in the Fallout outro movie, but it wasn't a wearable in-game armor until Fallout 3, where it can be found in Craterside Supply, Moira's store in Megaton. While it has the name Armored Vault Suit, it appears more like a normal vault suit underneath separate plates that are strapped to the wearer's body.