Qiviuq [sg] or qiviut [pl] (/ˈkɪviət/ KIV-ee-ət; Inuktitut syllabics, ᕿᕕᐅᖅ; Inuinnaqtun, qiviuq; Inupiaq qiviu or qiviuq sometimes spelled qiveut) is an Inuktitut word commonly used to indicate the wool of the muskox. The word was originally used to refer to the down feathers of birds as well as the inner wool of the muskox. It is valued for its use as a fiber as, unlike sheep's wool, it does not shrink in water at any temperature. (However, this means that it also is not useful for felting.) It is most commonly used for hats and scarves, and is among the softest wools. It is very expensive; a high quality knitted scarf can cost more than 300 U.S. dollars, but will last over 20 years with good care.