Fibre glossary
Materials & Fibres
Reference guide for every material tracked across the ApparelSignals index. Properties, sustainability context, and garment care — all in one place.
Natural fibres
Fibres sourced directly from plants or animals with minimal chemical processing.
Cotton
Plant fibre
The most widely used natural fibre in fashion. Soft, breathable, and versatile — the backbone of everyday apparel from t-shirts to denim.
Organic Cotton
Plant fibre (certified)
Cotton grown without synthetic pesticides or fertilisers, certified to organic standards (GOTS, OCS). Identical hand-feel to conventional cotton with a lower environmental footprint.
Wool
Animal fibre
A protein fibre shorn from sheep (primarily Merino). Naturally insulating, moisture-wicking, and odour-resistant — prized for knitwear, suiting, and outerwear.
Linen
Plant fibre
Made from the flax plant. Lightweight, breathable, and with a distinctive textured drape — a summer staple that softens with every wash.
Silk
Animal fibre
A luxury protein fibre produced by silkworms (Bombyx mori). Known for its luminous sheen, smooth hand, and elegant drape.
Cashmere
Animal fibre (luxury)
An ultra-fine, lightweight fibre combed from the undercoat of cashmere goats. Exceptionally soft and warm — a hallmark of premium knitwear.
Bamboo
Plant fibre
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.
Hemp
Plant fibre (bast)
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.
Jute
Plant fibre (bast)
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.
Ramie
Plant fibre (bast)
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.
Alpaca
Animal fibre
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.
Mohair
Animal fibre
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.
Yak
Animal fibre
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.
Down
Animal fill
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.
Feathers
Animal fill
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.
Leather
Animal hide
Tanned animal hide — primarily from cattle, sheep, and goats. A durable, non-woven material prized for its strength, texture, and patina development over time.
Fur
Animal pelt
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.
Semi-synthetic fibres
Derived from natural raw materials (wood pulp) but chemically processed into fibre.
Viscose
Regenerated cellulose
A versatile semi-synthetic fibre made from dissolved wood pulp. Drapes beautifully, absorbs moisture well, and is often used as a silk alternative.
Modal
Regenerated cellulose
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.
Lyocell
Regenerated cellulose
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.
Acetate
Regenerated cellulose
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.
Cupro
Regenerated cellulose
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.
Triacetate
Regenerated cellulose
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.
Synthetic fibres
Man-made fibres produced from petrochemicals through industrial processes.
Polyester
Petroleum-based
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.
Nylon
Petroleum-based
A strong, elastic synthetic fibre (polyamide). Prized for its durability and stretch — widely used in hosiery, swimwear, and outerwear.
Elastane
Stretch fibre
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.
Acrylic
Petroleum-based
A lightweight synthetic alternative to wool. Warm, soft, and moth-resistant — commonly used in affordable knitwear and cold-weather accessories.
Modacrylic
Modified acrylic
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.
Polyamide
Petroleum-based
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.
Polyurethane
Polymer coating
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.