Short answer: a lot of polyester. Zara is one of the biggest fast fashion retailers on Earth, and the majority of what they sell is made from synthetic fibres. That means plastic. On your skin. In your wardrobe. Shedding microplastics every time you wash it.

Here's what Zara actually uses, how much of it is synthetic, and how to check any specific item before you hand over your money.

Zara's Most-Used Fabrics

Browse any Zara category and you'll see the same names over and over. Here's what dominates:

  • Polyester — Zara's workhorse fabric. It's cheap, wrinkle-resistant, and holds dye well. It's also petroleum-based plastic that takes 200+ years to decompose and sheds microplastics with every wash. You'll find it in dresses, blouses, trousers, jackets, and basically everything.
  • Cotton — The most common natural fibre in Zara's range. Shows up in basics, t-shirts, and denim. Zara has pushed "organic cotton" in recent years, though it still makes up a fraction of total output.
  • Viscose (Rayon) — A semi-synthetic made from wood pulp. Better than polyester from a microplastics perspective, but the production process is chemically intensive. Common in Zara's flowy dresses and summer pieces.
  • Linen — Natural, breathable, biodegradable. The good stuff. But Zara uses it sparingly, mostly in seasonal collections. You'll pay more for it, and it wrinkles. Worth it.
  • Elastane (Spandex) — Almost never the primary fabric, but blended into everything for stretch. Usually 2-5% of a garment. Synthetic, but in small amounts.

The pattern is clear: polyester first, everything else second. Natural fibres exist in Zara's range, but you have to actively look for them. They're not the default.

What Percentage of Zara Is Synthetic?

Zara doesn't publish an exact breakdown of their fabric usage across all products. Convenient. But the data we do have paints a clear picture.

Across fast fashion as a whole, synthetic fibres account for roughly 69% of all textiles produced globally, with polyester alone making up over 50%. Zara, as one of the largest fast fashion brands, follows this trend closely. Independent analyses of Zara product pages consistently show polyester as the single most common material listed.

What does that mean in practice? It means if you pick up five random items from zara.com, three or four of them will be majority polyester. The flowy blouse that looks like silk? Polyester. The "linen-look" trousers? Probably a polyester-linen blend where polyester leads. The structured blazer? Almost certainly polyester.

You shouldn't have to guess. Fibr reads the fabric composition of every Zara product and shows it as a colour-coded badge right on the image. Green for natural, red for synthetic. No clicking into product details. No squinting at fine print.

How to Check Any Zara Item's Fabric Composition

Zara does list fabric composition on their product pages. Credit where it's due. But they bury it. You have to click into a product, scroll past the photos, past the size guide, and find the "Composition" section in tiny text. For every single item. Nobody does that.

That's why we built Fibr.

Fibr is a free Chrome extension that puts fabric composition where it belongs: right on the product image, while you browse. Here's how it works:

  • Install Fibr — one click from the Chrome Web Store. No signup, no account, no permissions you'd worry about.
  • Browse Zara — shop like you normally would. Fibr runs in the background.
  • See the badge — every product image gets a colour-coded label. Green means natural fibres. Yellow means mixed. Red means mostly synthetic. The composition percentage is right there.

Three seconds. No extra tabs. No scrolling. You see what every item is made of before you even click on it.

Is Zara Getting Better?

Zara's parent company Inditex talks a big game. They have a "Join Life" sustainability label (now rebranded), commitments to use more organic cotton and recycled polyester, and targets for 2030 that sound impressive in press releases.

The reality is more complicated.

Recycled polyester is still polyester. It still sheds microplastics. It's better than virgin polyester, sure, but it's not a solution — it's a less-bad version of the same problem. And "organic cotton" targets that cover 25% of cotton usage still mean 75% isn't organic. Marketing moves faster than supply chains.

Zara produces over 450 million garments a year. At that volume, incremental improvements get drowned out by sheer scale. The most honest thing you can do is look at the actual label on the actual item you're about to buy. Not the brand's sustainability page. Not the marketing copy. The fabric composition.

That's what Fibr shows you. The real data. Every item. Every time.

Frequently Asked Questions

Does Zara use polyester?

Yes. Extensively. Polyester is the single most common fabric in Zara's product range. It appears in dresses, blouses, trousers, outerwear, and activewear. If a Zara garment doesn't list its fabric prominently, there's a good chance polyester is the primary material. Fibr makes this visible instantly — just browse zara.com with the extension installed and you'll see the composition on every product image.

Is Zara sustainable?

Zara has sustainability commitments and a handful of eco-labelled collections, but they remain one of the world's largest fast fashion producers. They manufacture hundreds of millions of garments per year, the majority using synthetic fibres. Recycled polyester and organic cotton targets exist, but they cover a minority of total production. Sustainability claims should be evaluated item by item, not brand by brand — and that starts with knowing what each garment is actually made of.

Is Zara fabric quality good?

It depends entirely on the specific item. Zara's linen and cotton pieces can be decent quality for the price point. Their polyester garments — which make up the bulk of the range — tend to pill, trap heat, and feel less comfortable over time. The best way to judge quality before buying is to check the fabric composition. A garment that's 95% polyester and 5% elastane is a fundamentally different product from one that's 100% cotton, even if they look identical in photos. Fibr shows you this before you click "add to bag".