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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.
Developed by sheep farmers in Queensland, Australia, the highly exacting AAAAA grade denotes an exceptionally bright white, regular and long woollen fibre, obtained by protecting the sheep from the sun and rain using jersey jackets. Each one of these sheep requires half an acre to produce enough wool to make two suits.