Angora wool is made up of the under hair (wool) of the Angora rabbit. Because of the hollow core of the fibres, the wool provides more warmth than ordinary (sheep's) wool. It is also much lighter. The fibres are also thin, which produces the fluffiness for which Angora wool is best known. The fibres are normally plucked rather than shaven, which reduces the amount of outer, or guard hairs in the wool.