Gaiters were protective coverings of cloth or leather for the ankle and lower leg which keep things including mud, sand, snow, and liquids out; often worn by soldiers and explorers.
The Eighth Doctor wore gingerbread brown leather gaiters with laces over his caramel brown boots.(COMIC: The Pictures of Josephine Day, A Matter of Life and Death, The Lost Dimension) up to his death on Karn during the Time War. (TV: The Night of the Doctor)
Throughout his life, the War Doctor wore leather gaiters with buttons done in gingerbread brown, (COMIC: The Clockwise War), taupe, (COMIC: Ambush) charcoal grey (COMIC: The Organ Grinder), ash grey, (COMIC: Four Doctors) or army green. (TV: The Day of the Doctor) His army green gaiters were his last ones before his death after the 1562/2013 Zygon Invasion of Earth and the Fall of Gallifrey. (TV: The Day of the Doctor)
The Valeyard wore copies of the Eighth Doctor's gingerbread brown leather gaiters. (AUDIO: The War Valeyard)