This face mask is designed to protect the wearer from environmental hazards. It also provides more standard defense, giving +3 to Damage Threshold. It functions as an improved breathing mask, providing +50 radiation resistance; 10 times that of the standard variant.
- Ulysses' Temple - When Ulysses is encountered , he will be wearing this mask along with his duster.
- Canyon wreckage - Found in a footlocker the near the entrance to the Divide after Lonesome Road is completed.
- Ulysses' mask appears as both playable and non-playable versions in the game. The non-player character version is part of Ulysses' unique head model. The playable version is found on his corpse, as well as the footlocker found when the player leaves The Divide.