The Guard Outfit is worn by all guards in the prison. Your guard heat will increase while wearing a Guard Outfit in sight of a guard, simulating suspicion. If the Guard Outfit is being worn by the player, Tower Guards will refrain from shooting.
The Guard Outfit is one of the two outfits that can be obtained by working in the Laundry. For some reason similar to the weapon you can somehow sneak it out of laundry by wearing the Guard Outfit and make sure no police are outside. It can also be purchased from inmates, looted off of guards or crafted with the following recipe:
|Guard Outfit||Jar of Ink x1 + Infimary Overalls x1|