Moleskin
Moleskin was a form of cotton, called after the fur of moles.
The Eleventh Doctor wore double breasted overcoats of moleskin in olive green (TV: Let's Kill Hitler) or raven black. (TV: A Town Called Mercy)
The Eighth Doctor wore a bottle green moleskin overcoat up to his death. (COMIC: The Pictures of Josephine Day, TV: The Night of the Doctor)
The War Doctor wore double breasted moleskin waistcoats in ginger, (COMIC: The Clockwise War) mahogany, (COMIC: The Whole Thing's Bananas), mustard yellow, (COMIC: Fast Asleep), and dark brown-green. (TV: The Day of the Doctor)
The War Master wore a single breasted waistcoat of mustard yellow moleskin with his olive green tweed jacket. (AUDIO: Killing Time)
The Warrior wore double breasted moleskin waistcoats similar to the war incarnation of his N-Space counterpart. (AUDIO: Aftershock)