Fineness is the diameter of the individual fibers which represents a primary parameter in the evaluation of wool. Thanks to the selection of the breeds of origin of the wool, over time, this size has progressively increased, thus making it possible to obtain ever lighter fabrics. To verify it, it is sufficient to check the words affixed to the fabric where it is reported according to the definitions codified by the International Wool Texile Organization and the US Wool Products Baleling Act.
