This superior wool, originating in Australia and New Zealand bears the same name as the breed of sheep that provide it. Bright, warm and light, it is distinguished by the extreme finesse of its fibres, three times thinner than those of classic wool (which varies 30 to 50 microns, while Merino oscillates between 17 and 25). It is known as ‘Extrafine’ when the thread thickness is less than 19 microns.
Super 120’s, 130’s, 150’s…
The grades given by the IWTO (International Wool Textile Organization), known as SUPER 120’s, 130’s or 150’s, denote the fineness of a wool fibre used to weave a fabric. The higher the figure, the finer the fibre. The diameter of every 100’s wool fibre must measure no more than 18.75 microns. The 110’s should be 18.25 microns, the 120’s 17.75 microns… you just have to take away 0.5 microns to know the subsequent diameters.