It provides a bonus of +1 to both Charisma and Endurance as well as 5 radiation resistance. Faded variant adds +2 to Perception and has no other resistances. It takes up all of the body slots, preventing armor from being worn over it, but it can be upgraded with ballistic weave to increase the protection that it affords.
The yellow fedora and the yellow trench coat seems to be a reference to the 1930s cartoon strip, "Dick Tracy." The combo also seems to be the outfit of the mysterious stranger.
The Faded trench coat greatly resembles the trench coat the Mysterious Stranger wore in Fallout 3 and New Vegas.
Bugs
The appearance of the dirty trench coat is the same as the yellow trench coat on male characters and only shows correctly on female characters.
Gallery
Dirty trench coat
Faded trench coat
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