A black turtleneck worn as a layer for tactical espionage, infiltration, or otherwise covert special ops missions. Coined by the Television show, "Archer" on FX. Seen on the show as well as in spy/spec ops movies, television programs, and video games.
Spy 1: Be sure to dress dark for the mission.
Spy 2: Don't worry. I'm wearing my tactileneck.
Spy 1: Me too!