Qiviut is the softest, lightest yarn available. It is created from the undercoat of arctic mammals, most commonly the musk-ox. It is not as elastic as wool and cannot be pressed to form felt or shrink because of its lack of barbs and low elasticity. Muskox qiviut contains no oils like lanolin in unprocessed wool. People who are allergic to other natural fibres may not be allergic to qiviut.