Thread Report

COS Jacket Fabric Composition.

We analyzed 69 jacket products from COS. At 66.6% average natural fibre, jackets fall below COS's overall average of 77.6% by 11 points — one of their weaker categories. Cotton is the most common fibre in COS jackets, found in 31.9% of products.

69Jacket Products
66.6%Avg Natural Fibre
77.6%COS Overall

Top Fibres in COS Jacket

Cotton
31.9%
Wool
30.4%
Polyamide
24.6%
Polyester
20.3%
Elastane
14.5%

How COS Compares — Jacket

Average Natural Fibre % by Brand

Madewell
92.7%
Levi's
91.9%
Carhartt
81.3%
Massimo Dutti
79.4%
J.Crew
78.1%
Whistles
77%
Acne Studios
75.3%
& Other Stories
70.1%
Country Road
68.8%
Totême
66.8%
COS
66.6%
Ganni
59.5%
Mango
57.1%
Aritzia
56.9%
Sandro
55.9%
Zara
54.1%
Urban Outfitters
52%
Arket
50.1%
Bershka
48.3%
Maje
48.2%
Barbour
46.7%
Anthropologie
45%
H&M
43.7%
Reformation
43.2%
Weekday
43.1%
ASOS
41.5%
Quince
41.4%
Alo Yoga
39.2%
Meshki
38.5%
Pull&Bear
37.1%
River Island
33.3%
AllSaints
31.2%
Boohoo
27.3%
Princess Polly
26.9%
Topshop
23.2%
House of CB
23.1%
Cotton On
22.2%
Glassons
20.8%
New Look
19.3%
PrettyLittleThing
15%
Patagonia
14%
Gymshark
13.5%
Stradivarius
13.4%
SKIMS
11.2%
Vuori
0%

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Frequently Asked Questions

What are COS jackets made of?

Across 69 jacket products from COS, the average natural fibre content is 66.6%. This is below COS's overall average of 77.6%.

Are COS jackets good quality fabric?

At 66.6% average natural fibre, COS jackets are a mixed bag. Higher natural fibre content generally means better breathability, durability, and less microplastic shedding.

Should I buy jackets from COS?

If fabric composition matters to you, COS jackets average 66.6% natural fibre. Use the Fibr browser extension to check individual items while shopping — fabric quality varies widely even within one category.

Related reports.

COS Full Report837 total productsAll Brands: Jacket4464 products across all brandsCOS T-Shirt95.8% naturalCOS Blazer64.9% naturalCOS Sweater98.5% naturalCOS Coat76.1% natural

Explore the Thread Report

Part of an openly-licensed dataset.

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About the Thread ReportWhat the dataset is, how it's built, and how to cite it.All brand reportsFabric breakdowns for every retailer we track.Brand rankingsWho uses the most natural fibre — and the most polyester.Brand comparisonsHead-to-head fabric data for every viable brand pair.Research findingsOriginal findings built on the dataset.State of FabricThe annual report on fashion's fibre mix.MethodologyHow we classify fibres and compute every number.Fabric guides & researchHow to read labels, decode fibres, shop smarter.

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