tactleneck

noun1

1. •
   (informal) A black turtleneck used tactically to provide maximum skin coverage for blending in at night.

   • “I mean, I didn't invent the turtleneck, Lana, but I was the first to recognize its potential as a tactical garment.” “Ohh.” “The tactical turtleneck, Lana.” “Archer.” “The "tactleneck."” — 2010