An expensive, warm coat made of fur (well, duh). They are often made from the fur of mink or baby seals.
Animal rights activists have been protesting against the production of fur coats for years now. They have released many a mink into the wild, but that only resulted in the mink getting killed because it couldn't survive, and the producer of the coats losing money.
Fur coats are said to be very comfortable, if you can live with people shouting "murderer" when you walk by.