Vault Jumpsuit

The Vault Suit is a set of standard clothing worn by all inhabitants of Vault-Tec Vaults. The exact design of the suit is the same within a vault, but it seems that Vault-Tec might have purchased them from different subcontractors in different regions - e.g. the Vault Suits used in California Vaults, like Vault 13 or Vault 8 are skin-tight, while the ones from Vault 101, located near Washington, DC, are more baggy.

A variant of this suit, modified for extra protection, is called the Armored Vault Suit.

Appearances
Vault Suits appear in all Fallout games.