The Doctor's fur coat
The Doctor's fur coat was a fur coat used and worn by the Second Doctor in cold weather.
The coat was made of polyester rather than animal skin and was bought by einter the First or Second Doctor on the planet Thraxis. (AUDIO: No Place Like Home)
The Doctor was first known to wear it during his second incarnation, when visiting the Himalayas. He wore the coat to protect himself from the cold, but the coat lead him to being mistaken for the Robot Yeti who had been killing villagers. The Doctor was able to prove his innocence and stop the Yeti. (TV: The Abominable Snowmen)
The Doctor wore the coat again when encountering the Ice Warriors. (TV: The Ice Warriors)