Followers lab coat
The coat will be given to the Courier by Julie Farkas after becoming idolized and joining the Followers of the Apocalypse. To unlock the dialogue option, donate meds until she says an overstock is reached, then back out of the conversation. She will then force a new conversation offering the Courier to join the Followers.
This coat is identical in appearance to the Followers doctor coat worn by Followers doctors, but with improved bonuses.