Thread Report

J.Crew Blazer Fabric Composition.

We analyzed 34 blazer products from J.Crew. At 76.2% average natural fibre, this is roughly in line with J.Crew's overall average of 78.4%. Wool is the most common fibre in J.Crew blazers, found in 64.7% of products.

34Blazer Products
76.2%Avg Natural Fibre
78.4%J.Crew Overall

Top Fibres in J.Crew Blazer

Wool
64.7%
Cotton
38.2%
Polyester
35.3%
Elastane
29.4%
Viscose
20.6%

How J.Crew Compares — Blazer

Average Natural Fibre % by Brand

Massimo Dutti
89.5%
& Other Stories
84.5%
J.Crew
76.2%
Arket
69.2%
COS
64.9%
Whistles
55.5%
Ganni
54.2%
Country Road
50.9%
Aritzia
48.6%
Zara
45.6%
Bershka
42.4%
AllSaints
41.7%
Mango
40.1%
New Look
28.4%
River Island
20.8%
ASOS
15.4%
Topshop
14%
Pull&Bear
13.1%
Princess Polly
12.7%
Meshki
12.6%
Boohoo
4.2%
House of CB
3.5%

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Frequently Asked Questions

What are J.Crew blazers made of?

Across 34 blazer products from J.Crew, the average natural fibre content is 76.2%. This is below J.Crew's overall average of 78.4%.

Are J.Crew blazers good quality fabric?

At 76.2% average natural fibre, J.Crew blazers are among the better options. Higher natural fibre content generally means better breathability, durability, and less microplastic shedding.

Should I buy blazers from J.Crew?

If fabric composition matters to you, J.Crew blazers average 76.2% natural fibre. Use the Fibr browser extension to check individual items while shopping — fabric quality varies widely even within one category.

Related reports.

J.Crew Full Report2,004 total productsAll Brands: Blazer1762 products across all brandsJ.Crew Skirt71.3% naturalJ.Crew T-Shirt97% naturalJ.Crew Sweater92.3% naturalJ.Crew Shirt87% natural

Explore the Thread Report

Part of an openly-licensed dataset.

This page is one view of Fibr's Thread Report — fabric composition data for major fashion retailers, free to read and cite. Explore the rest:

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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