Tunnel Snake outfit (Fallout 3)

A Vault 101 Jumpsuit covered on the torso by a Leather Jacket (snake emblem on the back, can be seen on Butch DeLoria or the Tunnel Snakes before taking the G.O.A.T.). This is given to you for helping Butch save his Mother (Ellen DeLoria) as you escape from the Vault during the Escape! Quest.