Trader Rylee wears one, but it cannot be obtained without pickpocketing or murder, even if she is recruited to a settlement.

If Tina De Luca is recruited to a settlement, her Vault jumpsuit can be obtained by trading her a different outfit and equipping it.

Bobby De Luca's can be obtained without committing a crime, if he is insulted and turns hostile during Dependency.

A total of 32 can be obtained by either pickpocketing or murder.

There are no lootable jumpsuits in Vault 75.

Vault 118 jumpsuit - Originally worn only by the overseer of Vault 118. Vault 81 jumpsuit - Still worn by the inhabitants of Vault 81. There are eight numbered Vault jumpsuits in Fallout 4, including the Vault 101 jumpsuit that is not present in the game, the Vault 75 and Vault 95 jumpsuits which are unobtainable without console commands or mods and the Vault 118 and Vault 88 jumpsuits that require their respective add-on. Vault jumpsuits are worn by the inhabitants of the Vault that is represented by the number on the jumpsuit. The yellow stripe on the suit is actually a gold foil that aids in heat dissipation and works with the suit's integrated biometric scanners. It increases Energy Resistance by 5 and Radiation Resistance by 10 when worn.

This piece of apparel was the required clothing for every Vault and is comprised of a light blue jumpsuit with a yellow line around the neck, middle and sleeves.

Fallout 4 overboss outfit