Alpaca wool: Specialty hair fibers from alpaca. Typically softer, finer and more lustrous and warmer than sheep's wool.
Angora: Angora comes from the Angora rabbit. Angora is a long fiber which is extremely soft. Angora is commonly mixed with other wools due to its high cost but remain a popular single fiber in high end sweaters.
Cashmere: Named after a goat in the Kashmir region of Northern India. Cashmere is expensive and sometimes difficult to care for.
Icelandic wool: Icelandic sheep have a unique type of wool formed as a result of surviving many centuries in harsh Iceland winters. Their wool is unique and characterized by a soft insulating inner layer.