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Tejido · Fibre

Merino wool

One breed of sheep, bred for fineness over five centuries, supplying almost all fine suiting.

Merino is a sheep breed producing unusually fine, soft, well-crimped wool. It originated in Spain, where exporting the sheep was once punishable by death, and is now farmed mostly in Australia and New Zealand. Practically all worsted suiting is merino.

Fine merino yarn and a square of merino worsted
Fine merino yarn and a square of merino worsted

A guarded monopoly

Spain held an effective monopoly on merino sheep into the eighteenth century and protected it fiercely: exporting the animals was for a long period prohibited on pain of death. When the flocks did leave, through royal gifts and then the Peninsular War, the breed spread quickly to Saxony, France, South Africa and ultimately Australia, which now produces the majority of the world's fine merino.

The reason for all this trouble is a fibre roughly half the diameter of ordinary sheep's wool, with a tight crimp that makes it springy and soft.

Grades

Merino is sold by micron. Ordinary merino suiting sits around 18 to 21 microns. Below about 16.5 the wool is described as superfine, and the very finest lots, under 13 microns, are sold at auction for extraordinary prices and woven into cloth that is soft, expensive and comparatively fragile.

The trade's honest position, rarely stated in marketing, is that around 17 to 18.5 microns is where a suiting cloth is most useful: fine enough to be comfortable and strong enough to be worn.

How wool is actually bought

Fine merino is sold at auction by the bale, graded on mean fibre diameter, staple length, strength, and vegetable matter content. Buyers for the top mills compete for specific clips from specific growers, and the very finest bales (under 13 microns) reach prices that make headlines each year.

Two things follow. Vintage matters: a season's clip varies with weather and feed, so the same grower's wool differs year to year. And traceability at the top of the market is genuinely possible, because the bale is identified, which is why some mills can name the farm.

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Origin
Spain
Principal producers today
Australia, New Zealand, South Africa
Typical suiting fineness
17–21 µm
Superfine
Below about 16.5 µm

Quién trabaja con ello

Casas y fábricas de este sitio con una conexión documentada con Merino wool.

  1. An illuminated Ermenegildo Zegna sign Zegna Marca · Biella · 1910

    Zegna began as a wool mill in 1910 and is now one of the world's biggest luxury menswear companies, still weaving cloth and owning Thom Browne.

  2. Loro Piana Fabricante de tejidos · Biella · 1924

    Loro Piana began as a Biella wool mill and is now a big luxury clothing house, famous for rare fibres like vicuña and baby cashmere.

  3. Vitale Barberis Canonico Fabricante de tejidos · Biella · 1663

    Vitale Barberis Canonico is Italy's largest fine-wool mill, and if you own a mid- or upper-market Italian suit, its cloth may well be in it.

Fabricantes y comerciantes de tejidos

Todos los telares →
  1. Loro Piana Biella · 1924

    Loro Piana began as a Biella wool mill and is now a big luxury clothing house, famous for rare fibres like vicuña and baby cashmere.

  2. Vitale Barberis Canonico Biella · 1663

    Vitale Barberis Canonico is Italy's largest fine-wool mill, and if you own a mid- or upper-market Italian suit, its cloth may well be in it.

Para qué se usa

  1. A stack of three sweaters Sweaters and knitwear

    Sweaters are best judged by fibre and by whether they were knitted to shape piece by piece, which lasts longer than knitted fabric cut and sewn.

Última revisión: September 2026 Notificar un error en esta página
Créditos fotográficos 4
  1. Fine merino yarn and a square of merino worsted: Original art · Il Sartoriale · Il Sartoriale · Il Sartoriale original art
  2. Champion Merino ram (1905): Photograph · Unknown author · Wikimedia Commons · Public domain
  3. Front of the Ermenegildo Zegna Global Store (52039067673): Photograph · Chris Rycroft from Cambridge, Massachusetts, United States · Wikimedia Commons · CC BY 2.0
  4. A stack of three sweaters: Original art · Il Sartoriale · Il Sartoriale · Il Sartoriale original art

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