See what your clothes are
actually made of.

Fibr shows fabric composition right on the product image — while you shop Zara, H&M, and Mango. Know instantly if something is polyester-heavy, low-quality, or exactly what you want.

2,400+ people shopping smarter. No account needed.

94% Polyester
ZARA Flowy Midi Dress $49.90
2,400+ Chrome users
180K+ Products scanned
4.9 ★ Chrome Web Store

Works on the sites you already shop

+ more coming

Three seconds. That's it.

1

Install

Add Fibr to Chrome. One click, no signup, no permissions you'd worry about.

2

Browse

Shop Zara, H&M, or Mango like you normally would. Fibr runs silently in the background.

3

See it

Every product image gets a badge. Green for natural fibres. Yellow for mixed. Red for mostly synthetic. Done.

Most clothes online are lower quality than you think.

69%

of all clothing is synthetic — that's why so many clothes feel scratchy, trap sweat, and fall apart after 5 washes.

59%

of shoppers want to avoid synthetic fabrics for comfort — but brands bury composition in tiny text you never check.

900K

microplastic fibres shed per wash from synthetic clothing. Natural fabrics don't do this.

Fibr puts that information where it belongs: right on the product, before you buy.

Simple. No PhD required.

100% Cotton
H&M Relaxed Linen Shirt $34.99

Green

100% natural fibres. Cotton, linen, silk, wool. The good stuff. Buy with confidence.

60% Cotton 40% Poly
MANGO Knit Cardigan $59.99

Yellow

Mixed. Some natural, some synthetic. Not perfect, not terrible. Your call.

94% Polyester
ZARA Pleated Midi Skirt $45.90

Red

Mostly synthetic. Polyester, nylon, acrylic. It's plastic. Now you know.

Natural vs. synthetic. Here's the deal.

Natural Fibres

  • Cotton, linen, silk, wool, hemp
  • Biodegradable
  • Breathable on skin
  • No microplastic shedding
  • Been around for thousands of years

Synthetic Fibres

  • Polyester, nylon, acrylic, elastane
  • Made from petroleum
  • Sheds microplastics when washed
  • Can irritate sensitive skin
  • Takes 200+ years to decompose

Read the full Cotton vs Polyester comparison →

Questions you might have

Is polyester bad for your skin?

Polyester is a plastic-based fibre that doesn't breathe well and can trap heat and moisture against your skin. Many dermatologists recommend natural fibres like cotton and linen for people with sensitive skin, eczema, or allergies. Fibr helps you spot synthetic-heavy garments before you buy.

How can I check fabric composition before buying online?

Most retailers bury fabric composition deep in the product page — you'd have to click into every item and scroll to find it. Fibr does this automatically. It reads the composition data and shows it as a colour-coded badge right on the product image while you browse.

Does polyester release microplastics when washed?

Yes. A single load of synthetic clothing can release up to 900,000 microplastic fibres into waterways. These particles are too small for most filtration systems and end up in oceans, drinking water, and food chains. Choosing natural fibres is one of the most direct ways to reduce your microplastic footprint.

What percentage of clothing from Zara, H&M, and Mango is synthetic?

It varies by season and category, but across fast fashion retailers, synthetic fibres (primarily polyester) make up the majority of garments. Fibr lets you see the exact breakdown for every item — no more guessing whether that "breathable summer dress" is actually 90% polyester.

Is Fibr free?

Yes. Completely free, no account required, no data collected. Install it and it just works.

What sites does Fibr work on?

Currently Fibr works on Zara (zara.com), H&M (hm.com), and Mango (shop.mango.com). We're adding more retailers regularly — if there's a site you want supported, let us know.

Stop guessing. Start feeling better.

One install. Every product. Know what your clothes are made of before you buy.

Add to Chrome — It's Free

Chrome Web Store | Free forever | No account needed