Beaver hat

[1] Smaller hats made of beaver were sometimes called beaverkins,[2] as in Thomas Carlyle's description of his wife as a child.

[3] Used winter coats worn by Native Americans were a prized commodity for hat making because their wear helped prepare the skins, separating out the coarser hairs from the pelts.

[4] To make felt, the underhairs were shaved from the beaver pelt and mixed with a vibrating hatter's bow.

[5] Evidence of felted beaver hats in western Europe can be found in Chaucer's Canterbury Tales, written in the late 14th century: "A Merchant was there with a forked beard / In motley, and high on his horse he sat, / Upon his head a Flandrish [Flemish] beaver hat.

A Biberhut or Bieber Hit (Biber is the German word for beaver) is a hat worn by some Ashkenazi Jewish men, mainly members of Hasidic Judaism.