Thread Report

COS Dress Fabric Composition.

We analyzed 54 dress products from COS. At 67.1% average natural fibre, dresss fall below COS's overall average of 79% by 11.9 points — one of their weaker categories. Cotton is the most common fibre in COS dresss, found in 53.7% of products.

54Dress Products
67.1%Avg Natural Fibre
79%COS Overall

Top Fibres in COS Dress

Cotton
53.7%
Polyester
29.6%
Elastane
18.5%
Linen
16.7%
Polyamide
11.1%

How COS Compares — Dress

Average Natural Fibre % by Brand

Pangaia
100%
Madewell
94.1%
Barbour
90.6%
Free People
83.6%
J.Crew
82.2%
COS
67.1%
Acne Studios
65.5%
Reformation
63.7%
Cotton On
62.8%
Massimo Dutti
61.2%
& Other Stories
60.5%
Topshop
57.4%
Monki
56.1%
House of CB
55.9%
Weekday
55.7%
Ganni
55%
Anthropologie
53%
AllSaints
52.6%
Pull&Bear
52.3%
H&M
48.6%
Maje
41.8%
Stradivarius
41.4%
Mango
41.2%
Zara
40.5%
Aritzia
40.2%
Patagonia
37.3%
Bershka
35.1%
Sandro
33.7%
Alo Yoga
30.8%
Princess Polly
24.9%
ASOS
24.8%
New Look
21.7%
Meshki
15.2%
Glassons
14.8%
Boohoo
12%
PrettyLittleThing
7.6%
Nasty Gal
6.6%

Monthly Thread Reports

Get reports like this in your inbox.

We analyze thousands of products every month. Be the first to see new Thread Reports — fabric data nobody else publishes.

No spam. Unsubscribe in one click.

Frequently Asked Questions

What are COS dresss made of?

Across 54 dress products from COS, the average natural fibre content is 67.1%. This is below COS's overall average of 79%.

Are COS dresss good quality fabric?

At 67.1% average natural fibre, COS dresss are a mixed bag. Higher natural fibre content generally means better breathability, durability, and less microplastic shedding.

Should I buy dresss from COS?

If fabric composition matters to you, COS dresss average 67.1% natural fibre. Use the Fibr browser extension to check individual items while shopping — fabric quality varies widely even within one category.

Related reports.

Stop buying plastic by accident.

Fibr shows you what every garment is actually made of before you buy it. Green means natural fibre. Red means plastic.

Add to Chrome — It's free

Free forever. No account, no data collected, nothing to lose.