Which fabrics are not vegan?

Ten come up regularly: wool, merino, cashmere, mohair, angora, alpaca, camel hair, silk, down, and leather. Wool felt belongs on the list too, since traditional felt is matted wool. Suede and shearling are forms of leather, and velvet can be silk or synthetic depending on the piece, so both need a composition check instead of a rule.

Polyester is made from petrochemicals with no animal input, so it is vegan by composition. The trade-off sits elsewhere: polyester sheds microplastic fibers in the wash and comes from fossil feedstock. Recycled polyester made from post-consumer bottles reduces the feedstock problem without solving the shedding.

Is viscose or rayon vegan?

Yes. Viscose, rayon, modal, cupro, and lyocell are all regenerated cellulosics, made by dissolving wood pulp or cotton linter and spinning it into fiber. No animal material is involved. The environmental questions attached to them concern forestry sourcing and solvent recovery, not animal content.

What does contains non-textile parts of animal origin mean?

It is a mandatory phrase under EU textile labeling rules, required when a product includes an animal-derived component that sits outside the fabric itself: a leather patch, a horn or bone button, a fur trim, a bone toggle. The shell fabric can be entirely plant-based while this line quietly flags something on the garment that is not. It is the single most useful sentence on a clothing label and the easiest to skim past.

Is vegan leather just plastic?

Often, though the category has widened. PU and PVC leathers are polymer coatings on a fabric backing. Alongside them sit materials built from cactus, pineapple leaf fiber, apple and mango waste, cork, and mycelium. Many of these still use a polymer binder or backing, so the honest description is usually part bio-based, not fully plant. The composition label and the brand's own technical sheet are where the real answer lives.

Are dyes and finishes on clothing vegan?

Nearly always. The overwhelming majority of textile dyes are synthetic, and animal-derived colorants such as carmine are vanishingly rare in modern apparel. Adhesives are the more realistic question in footwear, where collagen-based glues have a long history, though synthetic adhesives dominate current production. Brands with a vegan certification will have covered both.

Polyester fleece is vegan, since it is knitted polyester brushed into a soft pile with no animal input. Sheep's fleece is wool, which the EU textile regulation defines as fiber from sheep's or lambs' fleeces, so it is not vegan. The fiber list settles it. Polyester or acrylic means synthetic fleece, and wool means sheep, as do the EU label names fleece wool and virgin wool.

Yes. Nylon, often labeled polyamide in the EU, is a synthetic polymer made from petrochemical feedstocks with no animal input. Blends are the part to check, since nylon also turns up with wool, silk, or cashmere in hosiery, sweaters, and suiting.

Vegan Fabrics and Materials: The Full Guide to Animal-Free Textiles

Ten fibers in common use come from animals. Everything else on a rack is plant, mineral, or synthetic. The harder part of a wardrobe check is rarely the main fabric. It is the button, the trim, the lining, and the one EU label phrase most people have never noticed.

Start with the short list

Checking a wardrobe goes faster from the other direction. Instead of verifying that forty fabrics are fine, learn the ten that come from animals.

Material	Comes from
Wool	Sheep, including merino
Cashmere	The undercoat of cashmere goats
Mohair	Angora goats
Angora	Angora rabbits
Alpaca	Alpacas
Camel hair	Bactrian camels
Silk	Silkworm cocoons
Down	The soft layer beneath the outer feathers of ducks and geese
Leather	Animal hide
Wool felt	Matted wool fiber

Three names cause more confusion than the rest. Suede and shearling are leather in a different finish, so they belong on the list without qualification. Velvet is a weave, not a fiber. It can be silk, cotton, viscose, or polyester, and only the composition label settles it. Felt is the quiet one: traditional felt is wool, synthetic craft felt is polyester, and the two are nearly indistinguishable on a shelf.

Everything past those ten is plant, mineral, or synthetic. That covers the overwhelming majority of what hangs on a rack.

The four families that are fine

Plant fibers

Grown, harvested, spun. The oldest category and the easiest to verify.

Organic cotton, conventional cotton, recycled cotton, linen, hemp, jute, ramie, and lotus fabric.

Hemp and linen carry the strongest environmental case in this group. Both grow with modest water and little pesticide input, and both have improved substantially in softness through modern processing. Conventional cotton sits at the other end on water and chemical use, which is a separate concern from animal content and worth holding in view.

Regenerated cellulosics

Wood pulp or cotton waste dissolved and re-spun into fiber. Plant-derived, chemically processed.

TENCEL / Lyocell, modal, viscose and rayon, cupro, bamboo viscose, acetate, and SeaCell.

Lyocell stands out because the solvent runs in a closed loop and is recovered instead of discharged. Conventional viscose production has a poorer record on solvent handling and forestry sourcing, so the FSC mark is a useful companion signal on this family.

Synthetics

Petrochemical polymers, extruded and spun.

Polyester, recycled polyester, nylon, Econyl, acrylic, spandex, microfiber, neoprene, synthetic fleece, Gore-Tex, and Ultrasuede.

These carry no animal content and do carry a microplastic cost. Every wash releases fibers, and fleece is among the heaviest shedders. Econyl and recycled polyester improve the feedstock story by starting from waste, and neither changes the shedding. A filter bag in the machine does more about this than a fiber swap.

Leather alternatives

The fastest-moving category, and the one where marketing language runs furthest ahead of the material.

PU leather and PVC leather are the established options: a polymer coating on a fabric backing. PU has largely displaced PVC in apparel on both performance and environmental grounds.

The newer entrants build from agricultural waste or fungi. Piñatex uses pineapple leaf fiber, cactus leather uses nopal, apple leather and mango leather use fruit processing waste, cork leather uses harvested bark, and Mylo and Muskin are grown from mycelium.

One honest caveat applies across most of this group: the bio-based content is usually a layer, bonded with a polymer binder onto a textile backing. A material advertised as cactus leather may be well under half cactus by weight. That does not make it a bad material. It makes the marketing shorthand imprecise, and the brand’s technical specification is where the real composition appears.

The parts that slip past

The main fabric is the easy half. Most misses happen at the edges of a garment.

The label phrase that matters. Regulation (EU) No 1007/2011 requires the words “Contains non-textile parts of animal origin” whenever a product includes an animal-derived component outside the fabric itself. That covers leather patches on jeans, horn and bone buttons, fur trim on a hood, leather pulls on a zipper, and bone toggles on a coat. The UK retained equivalent requirements. It is one line in small print, it is legally mandatory, and it catches exactly the things a composition list misses.

Where to look on a specific garment:

Buttons: horn, bone, and mother of pearl all appear on mid and premium tailoring
Trims and patches: the leather brand patch on denim is the classic case
Linings and interlinings: silk linings on jackets, and wool or horsehair canvas in structured tailoring
Fill: down in coats, duvets, and pillows
Footwear adhesives: collagen-based glues have a long history in shoemaking, though synthetics dominate current production
Shell finishes: some waxed and waterproofed finishes have historically used animal waxes

Composition percentages. The same regulation requires fiber content by percentage of weight. A sweater listing 5% wool contains wool. Marketing terms such as wool-feel, cashmere-touch, and silky appear precisely because the fiber itself is absent. In the EU, Article 5(2) of the regulation reserves each listed fiber name for that fiber and bars its use for any other fiber, whether on its own, as a root, or as an adjective.

What the non-textile parts of animal origin label means

“Contains non-textile parts of animal origin” means the product carries at least one component made from animal material other than a textile fiber.

The wording comes from Article 12 of Regulation (EU) No 1007/2011, the EU law on textile fiber names and fiber composition labeling. Article 12(1) requires that exact phrase on the labeling or marking whenever such a product is made available on the market. Article 12(2) adds that the labeling must be easy for a consumer to understand and must not mislead. Recital 8 of the regulation gives the purpose: to let consumers make informed choices.

The regulation itself gives no list of the parts it means. The European Commission’s guidance on the regulation spells out its reading: any parts made of materials such as down, feather, bone, leather, pearl, or horn, even in small quantities. The Commission also reads the word in broadly, so anything that forms part of the product counts however it is attached. That puts down and feather fill in jackets and mittens on the list, next to the leather patches, horn buttons, and fur trims covered above.

The line is one fixed sentence, so it leaves several things for you to work out.

Which part and which animal. Article 12 asks for the phrase alone. A single horn button and a fur trim around a hood produce the same sentence, and finding the part is up to you.

Animal fibers. Wool, silk, cashmere, mohair, alpaca, and horsehair are textile fibers under Annex I of the regulation, so they belong in the fiber composition, and the animal origin line covers the non-textile parts only. Annex VII then keeps accessories, decorations, non-elastic ribbons, interlinings, and canvas backings out of the fiber percentages. A silk ribbon or a horsehair canvas inside a tailored jacket can therefore go unmentioned on both lines.

Products outside the rule. The regulation covers products that are at least 80% textile fiber by weight (Article 2(2)), so a coat made mostly of leather or fur falls outside it. Down counts as a non-textile part, and the Commission’s guidance treats a feather bed filled with down the same way when textile fiber makes up less than 80% of its weight. Footwear has its own system: the guidance says Article 12 does not apply to footwear, since Directive 94/11/EC already requires pictograms or written labels for the upper, the lining and sock, and the outer sole, with separate categories for leather and coated leather. The shoes entry explains how to read them.

What to do when you see it. Treat the line as a prompt to find the part. Check the fill label on anything padded, then the hood, collar, cuffs, patches, buttons, toggles, and zipper pulls. When the part stays hidden, ask the seller which component the phrase refers to. Online, Article 16 requires the fiber composition to be visible before purchase. Article 12 places the animal origin phrase on the label or marking itself, so look for it in the product details or ask before you order.

Certifications that help here

No mark answers every question, and each covers a different axis.

GOTS: organic fiber with a full supply-chain audit, and the strictest textile scheme in this reference
The Vegan Society Trademark: covers clothing alongside food and cosmetics
OEKO-TEX Standard 100: chemical safety, not animal content
Global Recycled Standard: verifies recycled content claims
FSC: forestry sourcing behind the cellulosic fibers

Two marks are easy to misread. The Responsible Wool Standard and Responsible Down Standard both raise welfare floors substantially and both certify animal materials, so neither indicates a vegan product.

A two-minute wardrobe check

Read the composition percentages. Ten fiber names decide it, and the rest of the list is fine.
Find the non-textile animal parts line. One sentence, easy to miss, and it covers any non-textile part of animal origin, from a horn button to down fill.
Look at the hardware. Buttons, patches, and zipper pulls, especially on tailoring and denim.
Check the lining and the fill. Jackets, coats, and bedding are where this hides.
Treat feel words as noise. Wool-feel means no wool, which is useful information stated backwards.

The materials section of this reference covers 50 fabrics and finishes with sourcing, durability, and environmental notes on each, so any single item resolves in a few seconds.

Vegan Clothing Materials and How to Spot Them