Fibre glossary

Materials & Fibres

Reference guide for every material tracked across the ApparelSignals index. Properties, sustainability context, and garment care — all in one place.

30 materials
17 natural
6 semi-synthetic
7 synthetic

Natural fibres

Fibres sourced directly from plants or animals with minimal chemical processing.

Cotton

Plant fibre

Natural

The most widely used natural fibre in fashion. Soft, breathable, and versatile — the backbone of everyday apparel from t-shirts to denim.

Highly breathableGood moisture absorptionSoft hand-feel
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Organic Cotton

Plant fibre (certified)

Natural

Cotton grown without synthetic pesticides or fertilisers, certified to organic standards (GOTS, OCS). Identical hand-feel to conventional cotton with a lower environmental footprint.

Same softness as conventional cottonNo synthetic pesticide residuesTypically rain-fed (lower water use)
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Wool

Animal fibre

Natural

A protein fibre shorn from sheep (primarily Merino). Naturally insulating, moisture-wicking, and odour-resistant — prized for knitwear, suiting, and outerwear.

Excellent insulationNatural moisture wickingOdour resistant
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Linen

Plant fibre

Natural

Made from the flax plant. Lightweight, breathable, and with a distinctive textured drape — a summer staple that softens with every wash.

Highly breathable & cool to wearStrong & long-lastingNatural lustre
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Silk

Animal fibre

Natural

A luxury protein fibre produced by silkworms (Bombyx mori). Known for its luminous sheen, smooth hand, and elegant drape.

Luxurious sheen & drapeStrong for its weightNaturally temperature-regulating
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Cashmere

Animal fibre (luxury)

Natural

An ultra-fine, lightweight fibre combed from the undercoat of cashmere goats. Exceptionally soft and warm — a hallmark of premium knitwear.

Ultra-soft hand-feel3× warmer than sheep woolLightweight
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Bamboo

Plant fibre

Natural

A fast-growing grass fibre that can be processed mechanically into a linen-like textile. Naturally antibacterial and breathable, though most commercial bamboo fabric is chemically processed into viscose.

Naturally antibacterialHighly breathableSoft hand-feel
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Hemp

Plant fibre (bast)

Natural

One of the oldest cultivated fibres. Strong, durable, and naturally resistant to mould and UV — increasingly used in sustainable fashion as an alternative to cotton.

Extremely strong & durableNaturally UV & mould resistantBreathable
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Jute

Plant fibre (bast)

Natural

A long, coarse bast fibre from the jute plant. One of the cheapest natural fibres, traditionally used for sacking and rope — now finding niche use in fashion accessories and textured fabrics.

Very strongCoarse textureBiodegradable
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Ramie

Plant fibre (bast)

Natural

A bast fibre from the ramie plant, similar to linen but with a silkier lustre. One of the strongest natural fibres — naturally resistant to bacteria, mildew, and insects.

Very strong (stronger than cotton, linen, or wool)Natural silky lustreResistant to bacteria & mildew
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Alpaca

Animal fibre

Natural

A soft, lightweight fibre shorn from alpacas. Warmer than sheep wool and hypoallergenic (no lanolin) — prized in luxury knitwear for its silky hand-feel and natural colour range.

Softer & warmer than sheep woolHypoallergenic (lanolin-free)Naturally comes in 22+ colours
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Mohair

Animal fibre

Natural

A lustrous fibre from the Angora goat. Known for its exceptional sheen, resilience, and ability to take vibrant dyes — used in luxury knitwear and suiting.

Brilliant lustre & sheenVery strong & resilientTakes dye exceptionally well
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Yak

Animal fibre

Natural

A soft undercoat fibre from yaks, comparable to cashmere in warmth and fineness. An emerging luxury fibre with roots in Himalayan and Mongolian textile traditions.

As warm as cashmereBreathable & moisture-wickingOdour resistant
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Down

Animal fill

Natural

Soft, fluffy clusters from the underside of duck or goose plumage. The highest warmth-to-weight ratio of any natural insulator — the benchmark for premium outerwear and bedding.

Highest warmth-to-weight ratioExtremely compressibleLightweight
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Feathers

Animal fill

Natural

Outer plumage from ducks and geese, used as fill material alongside or instead of down. Heavier and less insulating than pure down, but more affordable and structurally supportive.

Good insulation (less than pure down)More structural support than downHeavier than down clusters
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Leather

Animal hide

Natural

Tanned animal hide — primarily from cattle, sheep, and goats. A durable, non-woven material prized for its strength, texture, and patina development over time.

Extremely durableDevelops patina with ageNaturally water-resistant
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Fur

Animal pelt

Natural

Animal pelts with the hair intact, used as whole skins for warmth and texture. One of the most contested materials in fashion due to animal welfare concerns.

Excellent insulationDistinctive texture & drapeNaturally water-repellent
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Semi-synthetic fibres

Derived from natural raw materials (wood pulp) but chemically processed into fibre.

Viscose

Regenerated cellulose

Semi-synthetic

A versatile semi-synthetic fibre made from dissolved wood pulp. Drapes beautifully, absorbs moisture well, and is often used as a silk alternative.

Excellent drape (silk-like)Breathable & absorbentSoft hand-feel
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Modal

Regenerated cellulose

Semi-synthetic

A type of rayon made from beech tree pulp using a modified viscose process. Softer and more durable than standard viscose, with better wet strength.

Exceptionally soft50% more absorbent than cottonResistant to shrinkage
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Lyocell

Regenerated cellulose

Semi-synthetic

A premium regenerated cellulose fibre produced in a closed-loop solvent process. Best known as TENCEL (by Lenzing) — softer than cotton, stronger than viscose, and one of the most sustainable semi-synthetic options.

Exceptionally soft & smoothStronger than viscose (including when wet)Highly breathable & moisture-managing
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Acetate

Regenerated cellulose

Semi-synthetic

A cellulose fibre partially treated with acetic acid, producing a silk-like drape and lustre at a lower cost. Widely used for linings and formal wear.

Silk-like drape & lustreLightweightComfortable against skin
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Cupro

Regenerated cellulose

Semi-synthetic

A regenerated cellulose fibre made from cotton linter (the short fibres around cottonseeds) using the cuprammonium process. Silky, anti-static, and breathable — often used as a premium lining fabric.

Silky smooth hand-feelAnti-staticHighly breathable
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Triacetate

Regenerated cellulose

Semi-synthetic

A fully acetylated cellulose fibre with higher heat resistance and dimensional stability than standard acetate. Less common today but still used in pleat-retaining and wrinkle-resistant fabrics.

Excellent pleat retentionWrinkle-resistantHigher heat resistance than acetate
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Synthetic fibres

Man-made fibres produced from petrochemicals through industrial processes.

Polyester

Petroleum-based

Synthetic

The world's most produced fibre. A plastic-based textile (PET) that is durable, wrinkle-resistant, and cheap to produce — dominant in sportswear and fast fashion.

Very durable & wrinkle-resistantQuick dryingRetains shape well
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Nylon

Petroleum-based

Synthetic

A strong, elastic synthetic fibre (polyamide). Prized for its durability and stretch — widely used in hosiery, swimwear, and outerwear.

Very strong & abrasion-resistantExcellent elasticityLightweight
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Elastane

Stretch fibre

Synthetic

Also known as Spandex or Lycra. A highly elastic fibre that stretches up to 600% of its length — almost always used as a small-percentage blend to add stretch.

Exceptional stretch & recoveryLightweightAlways blended (typically 2-15%)
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Acrylic

Petroleum-based

Synthetic

A lightweight synthetic alternative to wool. Warm, soft, and moth-resistant — commonly used in affordable knitwear and cold-weather accessories.

Soft & wool-likeLightweight & warmMoth & mildew resistant
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Modacrylic

Modified acrylic

Synthetic

A modified acrylic fibre with built-in flame resistance. Commonly used in faux fur, protective workwear, and children's sleepwear where fire safety is essential.

Inherently flame-resistantSoft & fur-like textureResistant to chemicals & solvents
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Polyamide

Petroleum-based

Synthetic

The chemical family name for nylon fibres. When labelled as 'polyamide' rather than 'nylon', it typically refers to unbranded variants — functionally equivalent in strength, elasticity, and performance.

Very strong & abrasion-resistantGood elasticityQuick drying
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Polyurethane

Polymer coating

Synthetic

A synthetic polymer used as a coating, laminate, or leather alternative. Often labelled as PU — provides water resistance, flexibility, and a leather-like appearance at lower cost.

Flexible & lightweightWater-resistantLeather-like appearance
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