The Drop Edit / Research
The Materials Index
Every design starts with a material choice. This is what 244 brands are made of, from natural fibers to performance synthetics, and what those materials do for the clothes.
48,526 pieces read244 brandsFrom each brand’s own fabric labelsUpdated monthly · October 2026
The short version
01 · What fashion is made of
Cotton, viscose and polyester run through most labels. Silk is in one in seven.
How many brands build with each material, meaning it’s at least 10% of all the fabric in their pieces.
- Cotton83%leads at 79
- Viscose75%leads at 34
- Polyester69%leads at 40
- Wool24%leads at 6
- Nylon16%leads at 4
- Silk15%leads at 3
- Linen9%leads at 3
- Leather5%leads at 2
- Cashmere3%leads at 1
- Natural
- Plant-based
- Synthetic
- Leather
02 · Explore by material
What each material does, and who works in it
Every fabric is a trade-off between drape, structure, feel, care and price. These are the brands that use each one most.
Silk
Fluidity & sheen
Follows the body and catches the light. Cool to wear, delicate to care for.
15% of brands
Used most by Realisation Par, Donde Esteban and Ulla Johnson
See all 25 brands →Linen
Texture & ease
Crisp at first, softer with every wear. Breathes; the creases are part of the look.
9% of brands
Used most by Agua by Agua Bendita, Cala de la Cruz and Palm Noosa
See all 16 brands →Cotton
Range & everyday
From crisp poplin to soft jersey. The most versatile natural fiber.
83% of brands
Used most by Steele, Antik Batik and Acne Studios
See all 142 brands →Wool & cashmere
Warmth & tailoring
Loft, warmth and a drape that holds a sharp shoulder.
26% of brands
Used most by Monse, Róhe and Almina Concept
See all 44 brands →Viscose
Drape & print
Made from wood pulp. Silk-like movement and rich print color at a gentler price.
75% of brands
Used most by Studio Rigu, Taller Marmo and PH5
See all 129 brands →Polyester & nylon
Color & structure
Holds pleats, color and shape and resists creasing. The workhorse of eveningwear and outerwear.
73% of brands
Used most by Selezza London, Curated Row and Eliya The Label
See all 125 brands →Performance
Movement & weather
Stretch, insulation and protection, engineered for skiing and sport.
3 brands
Used most by Goldbergh, Splits59 and Bogner
See all 3 brands →Leather
Structure & patina
Natural, but not a fiber. Shapes that hold and age with the wearer.
14 brands
Used most by Double A, Susanna Chow and Nour Hammour
See all 14 brands →
03 · Material signatures
Every brand has a design signature. It has a material one, too.
When one fiber makes up most of a brand’s fabric, the signature names it: silk-led, cotton-led. Otherwise it lists the fibers the brand uses most, like cotton, cashmere and wool.
Realisation Par

Silk-led
Silk carries the label’s fluid, feminine slip dresses.
79 pieces read
The Row

Cotton · Cashmere · Wool
A wardrobe of quiet, substantial basics built on three natural fibers.
77 pieces read

Agua by Agua Bendita

Linen · Cotton
Breathable textures for resort dressing.
114 pieces read
Rixo

Viscose-led, with silk
Viscose gives the prints their color and the dresses their swing.
83 pieces read

Studio Rigu

Viscose-led
Its “vegan silk” is cupro and modal: the drape of silk, made from wood pulp.
441 pieces read
Goldbergh

Performance
Polyester, nylon and elastane for skiwear that moves and keeps out the cold.
84 pieces read
04 · Every brand
Find what matters to you
Filter by a material or by a natural-fiber lens. The lenses are standards, not grades: natural-fiber led, low synthetic, synthetic-free.
178 brands
| Signature | Mix | |||||
|---|---|---|---|---|---|---|
| 01 Woomin | Wool · Viscose · Polyester | 24% | 34% | 42% | 93 | |
| 28NATELIER | Cotton · Polyester | 55% | 4% | 41% | 117 | |
| A.Emery | Wool · Cotton · Viscose | 63% | 26% | 11% | 89 | |
| A.W.A.K.E. MODE | Cotton · Wool · Polyester | 56% | 13% | 31% | 150 | |
| Aaizél | Cotton · Wool · Polyester | 48% | 16% | 36% | 79 | |
| Acler | Polyester-led | 15% | 24% | 61% | 1,007 | |
| Acne Studios | Cotton-led | 94% | 0% | 6% | 43 | |
| Agolde | Cotton-led | 82% | 13% | 5% | 130 | |
| Agua by Agua Bendita | Linen · Cotton | 93% | 5% | 2% | 114 | |
| Ahluwalia | Cotton-led, with wool | 64% | 17% | 19% | 117 | |
| Aje | Cotton · Viscose · Polyester, with linen | 54% | 17% | 29% | 1,551 | |
| ALC | Cotton · Viscose, with nylon | 56% | 26% | 18% | 127 | |
| Alémais | Cotton · Linen · Silk | 78% | 11% | 11% | 749 | |
| Alexis | Cotton · Viscose · Polyester, with nylon | 21% | 22% | 57% | 73 | |
| Almina Concept | Wool · Cotton · Polyester | 75% | 10% | 15% | 100 | |
| Amanda Uprichard | Polyester-led | 14% | 9% | 77% | 84 | |
| Ami Paris | Cotton · Wool · Leather | 94% | 4% | 2% | 77 | |
| Anim | Cotton-led, with linen | 80% | 2% | 18% | 82 | |
| Ann Andelman | Cotton · Viscose · Polyester, with leather | 52% | 19% | 29% | 68 | |
| Anna October | Viscose · Polyester | 12% | 46% | 42% | 79 | |
| Anna Sui | Cotton · Viscose · Polyester | 37% | 14% | 49% | 338 | |
| Antik Batik | Cotton-led | 92% | 2% | 6% | 56 | |
| Apparis | Polyester-led | 6% | 2% | 92% | 73 | |
| AQL&NAFS | Leather-led | 100% | 0% | 0% | 57 | |
| Arakii | Cotton · Viscose · Polyester, with silk | 34% | 32% | 34% | 79 | |
| Arcina Ori | Polyester-led | 5% | 14% | 81% | 110 | |
| Area | Cotton · Polyester | 49% | 9% | 42% | 73 | |
| Avec Les Filles | Cotton · Polyester · PU | 31% | 6% | 63% | 80 | |
| Bec + Bridge | Cotton · Viscose · Polyester, with nylon | 17% | 24% | 59% | 78 | |
| Because of Alice | Polyester-led | 4% | 12% | 84% | 85 | |
| Belle Anna | Cotton · Viscose, with nylon | 39% | 41% | 20% | 76 | |
| Bimba Y Lola | Cotton · Wool · Viscose | 61% | 25% | 14% | 40 | |
| Bogner | Performance | 30% | 5% | 65% | 53 | |
| Cala de la Cruz | Linen-led | 58% | 22% | 20% | 264 | |
| Carmen Says | Cotton · Viscose | 53% | 35% | 12% | 79 | |
| Celia B | Cotton · Viscose · Polyester | 42% | 17% | 41% | 175 | |
| Centre Piece | Viscose · Polyester · Leather | 35% | 33% | 32% | 49 | |
| Charo Ruiz Ibiza | Cotton-led | 81% | 0% | 19% | 71 | |
| Christopher Esber | Cotton · Viscose · Polyester | 39% | 39% | 22% | 394 | |
| Ciao Lucia | Cotton-led, with silk | 83% | 6% | 11% | 240 | |
| Cin Cin | Cotton · Viscose · Polyester, with nylon | 22% | 45% | 33% | 459 | |
| Cinq à Sept | Cotton · Viscose · Polyester | 38% | 19% | 43% | 1,402 | |
| Clio Peppiatt | Polyester-led, with nylon | 3% | 11% | 86% | 69 | |
| Collina Strada | Cotton · Viscose · Polyester, with silk | 57% | 27% | 16% | 306 | |
| Coloma's | Cotton · Viscose · Polyester | 43% | 26% | 31% | 58 | |
| Coperni | Cotton · Polyester · Nylon | 34% | 11% | 55% | 76 | |
| Courrèges | Cotton · Viscose · Polyester, with wool | 56% | 19% | 25% | 76 | |
| Cult Gaia | Silk · Cotton · Viscose | 47% | 33% | 20% | 73 | |
| Curated Row | Polyester-led, with nylon | 3% | 8% | 89% | 83 | |
| Damson Madder | Cotton-led | 80% | 6% | 14% | 281 | |
| DE SAVARY | Leather-led | 76% | 2% | 22% | 92 | |
| DESTREE | Cotton · Viscose · Polyester, with wool | 45% | 19% | 36% | 92 | |
| Diotima | Cotton · Wool · Viscose | 68% | 16% | 16% | 92 | |
| Dissh | Cotton · Linen · Viscose | 62% | 22% | 16% | 235 | |
| Donde Esteban | Silk · Cotton · Viscose | 55% | 44% | 1% | 75 | |
| Double A | Leather-led | 99% | 0% | 1% | 286 | |
| Dries Van Noten | Cotton · Wool · Viscose | 64% | 22% | 14% | 81 | |
| Ducie London | Leather-led | 79% | 0% | 21% | 86 | |
| Eliya The Label | Polyester-led | 8% | 3% | 89% | 79 | |
| Ernest Leoty | Cotton · Nylon | 55% | 2% | 43% | 77 | |
| Essentiel Antwerp | Cotton · Viscose · Polyester, with wool | 47% | 11% | 42% | 80 | |
| ESTHÉ | Polyester-led, with nylon | 19% | 11% | 70% | 487 | |
| Faithfull the Brand | Cotton · Linen · Viscose | 75% | 14% | 11% | 272 | |
| Farm Rio | Cotton · Linen · Viscose | 61% | 29% | 10% | 130 | |
| Fashion Brand Company | Cotton · Linen · Viscose | 60% | 29% | 11% | 448 | |
| Frame | Cotton · Cashmere | 82% | 9% | 9% | 166 | |
| Frenken | Cotton · Wool · Viscose | 55% | 20% | 25% | 240 | |
| Friends with Frank | Cotton · Wool · Polyester | 75% | 9% | 16% | 130 | |
| GANNI | Cotton · Wool · Viscose | 46% | 46% | 8% | 55 | |
| Goldbergh | Performance | 1% | 0% | 99% | 84 | |
| Guizio | Cotton · Viscose · Polyester, with nylon | 24% | 17% | 59% | 917 | |
| Hansen & Gretel | Cotton · Viscose · Polyester | 38% | 22% | 40% | 89 | |
| Henne | Cotton · Wool · Viscose | 47% | 22% | 31% | 524 | |
| Hill House | Cotton-led | 73% | 10% | 17% | 175 | |
| Holzweiler | Cotton · Wool · Polyester | 63% | 0% | 37% | 63 | |
| INSIS | Cotton · Wool · Polyester | 69% | 13% | 18% | 80 | |
| Iro | Viscose · Polyester · Leather | 54% | 16% | 30% | 80 | |
| Isabel Marant | Cotton · Viscose · Leather | 73% | 13% | 14% | 74 | |
| Jil Sander | Cotton · Wool · Viscose | 78% | 10% | 12% | 49 | |
| JW Anderson | Cotton-led, with wool | 80% | 7% | 13% | 56 | |
| KAI Collective | Cotton · Polyester | 61% | 3% | 36% | 78 | |
| Kallmeyer | Cotton · Wool · Viscose | 64% | 28% | 8% | 80 | |
| Khaite | Cotton · Cashmere · Leather | 75% | 13% | 12% | 80 | |
| Kika Vargas | Polyester-led, with nylon | 22% | 4% | 74% | 75 | |
| L’Agence | Cotton · Viscose · Polyester, with silk | 53% | 15% | 32% | 131 | |
| Laagam | Cotton · Viscose · Polyester, with PU | 49% | 10% | 41% | 78 | |
| Lamarque | Viscose · Polyester · Leather | 54% | 12% | 34% | 80 | |
| Leslie Amon | Viscose · Polyester · Nylon | 10% | 47% | 43% | 50 | |
| Loulou de Saison | Cashmere · Silk · Wool | 83% | 14% | 3% | 76 | |
| Lovebirds | Cotton · Viscose, with silk | 54% | 46% | 0% | 29 | |
| Ludovic de Saint Sernin | Cotton · Polyester · Leather | 72% | 2% | 26% | 71 | |
| Mackage | Wool · Nylon · Polyester | 43% | 1% | 56% | 97 | |
| Magda Butrym | Cotton · Wool · Silk | 81% | 6% | 13% | 77 | |
| Mais X Frida | Cotton-led, with nylon | 51% | 12% | 37% | 74 | |
| Manière de Voir | Polyester-led, with nylon | 17% | 14% | 69% | 101 | |
| Marcella | Viscose-led | 27% | 57% | 16% | 1,342 | |
| Maria de la Orden | Cotton-led, with wool | 82% | 10% | 8% | 79 | |
| Marni | Cotton · Wool | 93% | 2% | 5% | 53 | |
| Marques' Almeida | Cotton-led, with wool | 70% | 8% | 22% | 666 | |
| Materiel | Wool · Viscose · Polyester | 38% | 33% | 29% | 99 | |
| Milkwhite | Cotton · Viscose · Polyester | 37% | 24% | 39% | 60 | |
| Mirae | Viscose · Polyester | 19% | 49% | 32% | 58 | |
| Misha | Viscose · Polyester | 27% | 31% | 42% | 80 | |
| Modalità Vacanza | Cotton-led, with PU | 61% | 2% | 37% | 39 | |
| Modern Citizen | Cotton · Viscose · Polyester, with wool | 52% | 16% | 32% | 407 | |
| Monse | Wool · Cotton · Silk | 80% | 7% | 13% | 77 | |
| Montsand | Polyester-led, with nylon | 7% | 8% | 85% | 74 | |
| Mossman | Viscose · Polyester · Nylon | 15% | 23% | 62% | 84 | |
| My Beachy Side | Cotton · Acrylic · Polyester | 48% | 1% | 51% | 75 | |
| Nanushka | Cotton · Viscose · Polyester, with wool | 42% | 27% | 31% | 81 | |
| Nocturne | Cotton · Viscose · Polyester | 26% | 35% | 39% | 85 | |
| Nonchalant Label | Viscose · Polyester · Vegan leather | 16% | 39% | 45% | 69 | |
| Noni Studios | Viscose · Polyester | 8% | 34% | 58% | 47 | |
| Nour Hammour | Leather-led | 99% | 0% | 1% | 76 | |
| Nué Studio | Wool · Polyester · Nylon | 38% | 12% | 50% | 44 | |
| OpéraSPORT | Cotton · Polyester | 58% | 5% | 37% | 351 | |
| Ottolinger | Cotton · Polyester | 51% | 6% | 43% | 79 | |
| Padova | Cotton · Linen · Viscose | 41% | 33% | 26% | 457 | |
| Palm Noosa | Linen · Cotton · Viscose | 81% | 11% | 8% | 76 | |
| PatBO | Cotton · Nylon · Polyester | 15% | 11% | 74% | 484 | |
| Peachy Den | Cotton · Viscose · Polyester, with nylon | 34% | 37% | 29% | 40 | |
| PH5 | Viscose-led, with nylon | 8% | 60% | 32% | 926 | |
| Pixie Market | Cotton · Viscose · Polyester, with wool | 43% | 20% | 37% | 231 | |
| Posse | Cotton · Linen · Viscose | 72% | 18% | 10% | 164 | |
| Proenza Schouler | Cotton · Viscose · Polyester, with wool | 48% | 31% | 21% | 604 | |
| Realisation Par | Silk-led | 90% | 8% | 2% | 79 | |
| Redondo Brand | Viscose · Polyester, with PU | 16% | 22% | 62% | 42 | |
| Reformation | Silk · Cashmere · Viscose | 57% | 28% | 15% | 35 | |
| Rejina Pyo | Cotton · Viscose · Polyester, with nylon | 42% | 26% | 32% | 94 | |
| Retrofete | Cotton · Viscose · Polyester, with nylon | 27% | 23% | 50% | 1,742 | |
| Rixo | Viscose-led, with silk | 38% | 57% | 5% | 83 | |
| Roame | Cotton · Viscose · Polyester, with linen | 52% | 21% | 27% | 48 | |
| Róhe | Wool · Cotton · Viscose | 80% | 10% | 10% | 292 | |
| Ronny Kobo | Viscose · Polyester · Nylon | 16% | 22% | 62% | 78 | |
| Rowen Rose | Cotton · Viscose · Polyester, with PU | 43% | 18% | 39% | 80 | |
| Ruadh | Cotton-led, with cashmere | 73% | 26% | 1% | 79 | |
| Sabo | Cotton-led, with linen | 59% | 8% | 33% | 80 | |
| Saemdi | Cotton · Viscose · Polyester | 15% | 21% | 64% | 111 | |
| Saint Art | Cotton · Viscose · Polyester | 30% | 38% | 32% | 75 | |
| Sau Lee | Polyester-led | 18% | 12% | 70% | 80 | |
| Sea NY | Cotton · Wool · Viscose | 59% | 23% | 18% | 369 | |
| Selezza London | Polyester-led | 0% | 1% | 99% | 78 | |
| Self-Portrait | Cotton · Viscose · Polyester, with wool | 24% | 21% | 55% | 75 | |
| Selkie | Cotton-led, with silk | 79% | 3% | 18% | 365 | |
| SIEDRÉS | Polyester-led | 20% | 17% | 63% | 69 | |
| SIGAL | Cotton-led, with linen | 72% | 22% | 6% | 101 | |
| Significant Other | Cotton · Viscose · Polyester | 17% | 29% | 54% | 516 | |
| SIMKHAI | Cotton · Viscose · Polyester, with wool | 39% | 31% | 30% | 79 | |
| Simon Miller | Cotton · Viscose · Polyester, with nylon | 36% | 18% | 46% | 346 | |
| Simone Rocha | Cotton · Viscose · Polyester, with wool | 42% | 19% | 39% | 78 | |
| SIR. | Silk · Cotton · Viscose | 58% | 17% | 25% | 114 | |
| Sister Jane | Polyester-led | 22% | 8% | 70% | 69 | |
| Solaqua | Cotton · Viscose · Polyester | 32% | 21% | 47% | 46 | |
| Splits59 | Performance | 0% | 21% | 79% | 61 | |
| SRG Atelier | Silk · Wool · Viscose | 57% | 29% | 14% | 87 | |
| St. Agni | Cotton · Wool · Viscose | 74% | 13% | 13% | 443 | |
| Staud | Cotton · Silk · Viscose | 70% | 14% | 16% | 98 | |
| Steele | Cotton-led | 93% | 3% | 4% | 153 | |
| Stine Goya | Cotton · Viscose · Polyester | 29% | 24% | 47% | 482 | |
| Studio Rigu | Viscose-led | 30% | 70% | 0% | 441 | |
| Susanna Chow | Leather-led | 99% | 1% | 0% | 74 | |
| Taller Marmo | Viscose-led, with silk | 15% | 65% | 20% | 79 | |
| The Frankie Shop | Cotton · Wool · Polyester | 52% | 13% | 35% | 1,664 | |
| The Garment | Wool · Cotton · Viscose | 62% | 20% | 18% | 91 | |
| The Line by K | Viscose-led | 25% | 59% | 16% | 393 | |
| The Row | Cotton · Cashmere · Wool | 98% | 0% | 2% | 77 | |
| The Wolf Gang | Cotton · Viscose · Polyester, with nylon | 42% | 23% | 35% | 84 | |
| Tibi | Cotton · Wool · Polyester | 55% | 14% | 31% | 1,527 | |
| Totême | Cotton · Viscose, with silk | 60% | 36% | 4% | 85 | |
| Tove | Wool · Cotton · Viscose | 53% | 41% | 6% | 70 | |
| Tyler Mcgillivary | Cotton · Viscose · Polyester | 42% | 37% | 21% | 80 | |
| Ulla Johnson | Silk · Cotton · Viscose | 75% | 11% | 14% | 641 | |
| Undress Code | Viscose · Polyester · Nylon | 17% | 42% | 41% | 109 | |
| Venroy | Cotton · Linen · Silk | 86% | 8% | 6% | 921 | |
| Veronica Beard | Cotton · Viscose · Polyester | 65% | 16% | 19% | 874 | |
| With Jéan | Cotton · Viscose · Polyester, with nylon | 22% | 42% | 36% | 80 | |
| Yellow The Label | Cotton · Viscose · Polyester, with linen | 44% | 19% | 37% | 238 | |
| Zimmermann | Cotton · Silk · Viscose | 64% | 18% | 18% | 67 |
A to Z by default. Sort by any column. No overall rank, because no single number captures what a material is for.
Beyond the fabric
Shoes, bags, swimwear and leather
Leather, suede, raffia and wood count as natural; PU, vegan leather and other plastics as synthetic. Swimwear is almost always nylon or polyester with stretch, because it has to be.
Shoes and bags
- AeydeWorks most in leather
- Alameda TurquesaWorks most in leather
- Alias MaeWorks most in leather
- AlohasWorks most in leather and synthetics
- Amina MuaddiWorks most in leather and silk
- Anonymous CopenhagenWorks most in leather and cotton
- ArezzoWorks most in leather and synthetics
- ATP AtelierWorks most in leather
- AureumWorks most in leather
- Black Suede StudioWorks most in leather and alpaca/mohair
- By FarWorks most in leather
- Carel ParisWorks most in leather
- CastañerWorks most in cotton and leather
- Cecelia New YorkWorks most in leather
- Dear FrancesWorks most in leather and synthetics
- Emme ParsonsWorks most in leather
- FlabelusWorks most in cotton and linen
- FlatteredWorks most in leather
- Freda SalvadorWorks most in leather
- FrejaWorks most in vegan leather
- HereuWorks most in leather
- Jude the BrandWorks most in leather
- JW PeiWorks most in vegan leather
- L’alingiWorks most in leather and raffia
- LarroudéWorks most in leather
- Le Monde BérylWorks most in leather and synthetics
- LiffnerWorks most in leather
- Mansur GavrielWorks most in leather
- Manu AtelierWorks most in leather
- Maria La RosaWorks most in raffia and polyester
- MlouyeWorks most in leather
- NakedviceWorks most in polyester and cotton
- Nelson MadeWorks most in leather
- Noam HazanWorks most in leather and vegan leather
- Nora LozzaWorks most in leather
- Paris TexasWorks most in leather
- PoelleWorks most in leather
- PoeveWorks most in leather
- Poppy LissimanWorks most in synthetics and vegan leather
- PriscaWorks most in vegan leather
- Sadi StudiosWorks most in leather
- SavetteWorks most in leather
- Sebastian MilanoWorks most in leather and silk
- SensoWorks most in leather
- StrathberryWorks most in leather
- VagabondWorks most in viscose and leather
- Verafied New YorkWorks most in leather
- YuzefiWorks most in leather and viscose
- Zou XouWorks most in leather
Leather-led clothing
At least half the material is leather. Leather is natural but isn’t a fiber, so these brands are described apart from the fiber lenses.
- Double A98% leather · works most in leather
- Susanna Chow89% leather · works most in leather
- Nour Hammour86% leather · works most in leather
- Ducie London76% leather · works most in leather and polyester
- AQL&NAFS74% leather · works most in leather and wool
- DE SAVARY62% leather · works most in leather and polyester
Not in the indexData gaps
14 brands partly measured · 29 brands that don’t list their fabric
Partly measured
14 brands list the fabric on 40 to 59% of their pieces, so we show what we could read, without a signature.
- 3.1 Phillip Lim65% natural · fabric listed on 52%
- AKNVAS31% natural · fabric listed on 48%
- Aligne55% natural · fabric listed on 57%
- Deiji Studios90% natural · fabric listed on 56%
- Desero Jacare21% natural · fabric listed on 53%
- Eckhaus Latta88% natural · fabric listed on 52%
- Enaguas100% natural · fabric listed on 48%
- Grace Ling70% natural · fabric listed on 41%
- Kwame Adusei74% natural · fabric listed on 48%
- Little Yarn67% natural · fabric listed on 56%
- miaou17% natural · fabric listed on 59%
- Muma World45% natural · fabric listed on 56%
- RAT & BOA11% natural · fabric listed on 49%
- Simonett53% natural · fabric listed on 59%
Don't list their fabric
We read their product pages, rendered in full, and most pieces didn't say what they're made of.
Asta Resort, Audette, Axel Arigato, Bernadette, Bondi Born, Concept A Label, Dear Rome, Gestuz, Joelle Zgheib, Kim Shui, Live The Process, Mali Marea, Marfa Instanbul, Mimchik, Minena, Mrs. Keepa, Pierre Louis Mascia, Reemani, Sac de Soul, Seam, Selmacilek, Simitri, SIRAPOP, Sisters, The Vin Store, Tissimum, Wai Wai Rio, WISKII, Zemeta
The methodHow we read it
We read the fabric composition each brand prints on its own product pages (“Shell: 52% linen, 48% viscose. Lining: 100% cupro”). Nothing is estimated. A fabric a brand names instead of listing (“vegan silk”) counts as the fibers its own fabric guide says it is, or not at all; it is never taken as silk. Shares are weighted by fabric, so a 70% cotton, 30% polyester dress counts as 70 points of cotton. Linings, trims and soles don't count.
A signature describes what a brand works in. It is not a grade of quality, craftsmanship or sustainability.
- Natural
- Cotton, linen, silk, wool, cashmere, alpaca, mohair, hemp, ramie, raffia, and leather, which is natural but not a fiber.
- Plant-based
- Viscose, rayon, modal, Tencel (lyocell), cupro, acetate. Made from wood pulp and chemically processed. In the chart and the signatures, viscose stands for all of them.
- Synthetic
- Polyester, nylon (polyamide), acrylic, PU and vegan leather, metallic yarns, and elastane.
Signatures. When one fiber is at least half the fabric and twice the next, the brand is led by it (“Silk-led”). Otherwise we name the fibers that make up at least 10% of it, natural first, then plant-based, then synthetic. Cotton, viscose and polyester run through most labels, so when a brand works only in those we add what sets it apart (“with silk”). Performance means a brand that makes ski or active wear and works mostly in synthetics. Leather-led means at least half the material is leather.
Lenses. Natural-fiber led: at least 85% of the fabric is natural fibers like cotton, linen, silk and wool. Low synthetic: no more than 10% of the fabric is synthetic, stretch included. Synthetic-free: essentially no polyester, nylon or acrylic, and little or no stretch.
Coverage. Some brands only name the fabric when it's a selling point (“crafted from 100% silk”), which makes them look more natural than they are. So the pieces we read stand in for the ones we couldn't, and a brand gets a full breakdown only when its fabric is listed on at least 60% of its range.
What this doesn't measure: how a fiber was grown, dyed or sewn, or who made it. Jewelry, menswear and multi-brand stores are left out. Checked monthly; a brand's numbers change as its range does.
Questions
Natural fibers, explained
Which clothing brands use natural fibers?
Of the 172 clothing brands we measured, 9 are natural-fiber led: at least 85% of the fabric in their pieces is natural fibers like cotton, linen, silk and wool. Choose the natural-fiber led lens in the index to see them.
Which brands don’t use polyester?
4 of the clothing brands we measured are synthetic-free: essentially no polyester, nylon or acrylic, and little or no stretch. 27 keep synthetics to 10% of the fabric or less.
What is a material signature?
A short description of what a brand works in, read from its own fabric labels. When one fiber is at least half the fabric, the brand is led by it, like silk-led. Otherwise it names the fibers the brand uses most, like cotton, cashmere and wool. It describes; it is not a grade of quality, craftsmanship or sustainability.
Is viscose a natural fiber?
Not quite. Viscose, rayon, modal, Tencel (lyocell), cupro and acetate are made from wood pulp, so they are plant-based and not plastic, but they are chemically processed. We count them separately as plant-based.
Does leather count as a natural fiber?
Leather is a natural material, but it isn’t a fiber. Brands whose pieces are mostly leather are described as leather-led. In a mostly fabric range, a leather jacket counts toward the natural share.
Why doesn’t every brand have a full breakdown?
A full breakdown needs the fabric listed on at least 60% of a brand’s pieces. Some brands only list fabric when it is a selling point, which would make them look more natural than they are, so we show those as a partial read. Jewelry, multi-brand stores and brands we couldn’t read are left out.
How often is the Materials Index updated?
Every month. New pieces are read as brands add them, and pieces that leave a brand’s catalog drop out of its numbers.