worsted

Worsted is a yarn made from wool fibres that have been combed to align them parallel before spinning. The combing process, called combing, removes short fibres and neps (tangled fibre clusters) and leaves the long staple fibres pointing the same direction. When these aligned fibres are spun into yarn, they pack tightly and create a smooth, lustrous surface that resists pilling and holds shape well in finished cloth.

The name comes from Worstead, a village in Norfolk, England, where the yarn was produced in medieval times. The technique itself is much older, but the place name became the standard term across the English-speaking textile trade and remains so today.

Worsted differs fundamentally from woollen yarn, which uses shorter fibres that are carded but not combed. In carding, the fibres are deliberately left tangled and randomly oriented. This creates yarn with more air pockets, which traps warmth but also makes the yarn bulkier, weaker, and more prone to pilling. A woollen yarn of the same weight will be thicker and fluffier than worsted.

Production and properties

The combing step requires extra equipment and labour, so worsted yarn costs more to produce than woollen yarn. The long-staple wool suitable for worsting is also more expensive than the shorter fibres used in woollen production. These investments pay off in durability and appearance: worsted fabrics are harder-wearing, shed less lint, and hold a crisp pleat or edge much longer than woollen cloth. Worsted suiting can retain a crease through dozens of washes.

Worsted yarns are spun to lower twist levels than woollen yarns because the aligned fibres already hold together well. A typical worsted count might be 2/30 (two-ply, 30 yards per pound per ply), whereas equivalent woollen yarns run higher twist. The spin must still be tight enough to prevent the yarn separating into its component fibres during weaving or wear.

In the trade, worsted weight refers to the fineness and ply structure of the yarn rather than its actual mass. A 2/30 worsted is distinct from a 2/40 worsted (finer) or a single-ply worsted. Suiting, gabardine, and fine knit fabrics typically use worsted yarn; blankets, hand-knit jumpers, and tweeds typically use woollen. High-performance sportswear sometimes uses worsted for its durability and reduced bulk, though modern synthetic fibres now compete in this space.