|The following is based on Fallout Shelter and some details might contradict canon.|
Why? Because you're a Tunnel Snake. And you RULE!”— In-game description
The outfit consists of a black leather jacket worn over the standard-issue vault suit and a black belt.
This outfit can only be worn by male dwellers and boosts a dweller's Perception, Charisma and Agility by 2 and increases their Endurance by 1.
Yao guai hide (5)
Teddy bear (4)
Tunnel Snakes' outfit (1)