You pick up a shirt in the market. It feels soft, the colour is nice, the price is fair. Then you turn the tag and see “65% polyester, 35% cotton.” Is that good? Will it shrink? Will it feel hot in summer?
That small line on the tag is the fabric composition, and it tells you almost everything about how a cloth will look, feel and age. We work with cotton every day at our printing studio in Bagru, near Jaipur, so we see the difference fabric composition makes before a single block touches the cloth.
This guide explains fabric composition in plain language: what it means, how to read it, and how to choose the right fabric for what you want to make or buy.
What Is Fabric Composition?
Fabric composition is the list of fibers a cloth is made from, shown as a percentage of the total weight. A tag that says “100% cotton” means every thread is cotton. A tag that says “80% cotton, 20% polyester” means the cloth is a blend, with cotton as the main fiber and polyester making up the rest.
Fibers are listed from highest percentage to lowest on most labels, so the first fiber you see is the one that decides most of the fabric’s character. The numbers should always add up to 100%.
Fabric composition is not the same as fabric type. “Cotton” is a fiber. “Poplin” or “twill” describes how the threads are woven. We will come back to this a little later, because it confuses a lot of people.
Why Fabric Composition Matters
Two shirts can look identical on a hanger and behave completely differently after three washes. The fabric composition is the reason. Here is what it controls:
- Comfort and breathability. Natural fibers like cotton and linen let air move and absorb sweat. Polyester does not absorb much moisture, so it can feel sticky in heat.
- Durability. Synthetic fibers are usually stronger and resist wear, which is why they show up in uniforms and bags.
- Shrinkage and wrinkles. Cotton and linen can shrink and crease. Polyester resists both.
- Care. A blend should be washed according to its most delicate fiber. When two fibers are almost equal in percentage, follow the gentler instructions.
- Dyeing and printing. This one is close to our heart. Natural dyes and many printing pastes bond well with natural fibers and poorly with polyester.
Once you know this, a fabric composition label stops being fine print and starts being useful information.
Natural, Synthetic and Semi-Synthetic Fibers
Almost every fabric composition falls into one of three groups.
Natural fibers come from plants or animals.
- Cotton (plant) is soft, breathable and easy to dye. It is the most widely used textile fiber in the world.
- Linen (plant, from the flax stem) is strong and cool, but it wrinkles quickly.
- Wool and silk (animal) are warm and luxurious, and need more careful washing.
Synthetic fibers are made through a chemical process.
- Polyester and nylon are strong, quick to dry and resist wrinkles.
- Elastane (also sold as spandex or Lycra) adds stretch, usually in small amounts of 2–5%.
Semi-synthetic fibers sit in between. Viscose, also called rayon, is made from wood cellulose. It feels soft and drapes well, but it creases easily and can weaken when wet.
If you want to understand how these fibers turn into the clothes people wear every day, our guide to the types of clothes, fabrics and materials is a good next read.
Fabric Blends: What Happens When Fibers Are Mixed
A fabric blend combines two or more fibers to get the best of each. Makers do this to improve comfort, lower the price or make a fabric easier to look after. Here are the combinations you will meet most often:
| Fabric blend | What you get |
|---|---|
| Cotton + polyester | Cotton’s softness with polyester’s strength and wrinkle resistance. Common in shirts and uniforms. |
| Cotton + linen | A cool, breathable cloth that is softer than pure linen and drapes well. Good for summer wear. |
| Cotton + elastane | Comfortable stretch, used in jeans, leggings and fitted tops. |
| Cotton + viscose | Softer fall and a smoother feel, but needs gentler washing. |
| Cotton + wool | Warmth with breathability. Flannel is sometimes made this way. |
One thing worth saying honestly: a blend is not automatically better or worse than a pure fabric. A 100% cotton kurta is perfect for a hot Jaipur afternoon. A 65/35 polyester-cotton shirt is a better choice if it will be washed every day and ironed rarely. The right fabric composition depends on how you plan to use the cloth.
How to Read a Fabric Composition Label
Look at three things on any label.
- The fiber names. Check the first fiber listed, since it is the main one.
- The percentages. A fiber at 95% sets the character of the cloth. A fiber at 5% adds a small property, like stretch.
- The care symbols. Wash temperature, bleaching and ironing instructions are all linked to the fabric composition.
Some labels list the shell, the lining and trims separately. Read each line, because a jacket can have a cotton shell and a polyester lining.
If you are buying fabric by the meter online, the listing should also tell you the width and the weight. That brings us to a point many beginners miss.
Fabric Composition vs Weave vs GSM
Three different things describe a fabric, and they are often mixed up.
- Fabric composition is which fibers are in it.
- Weave is how the threads cross each other. Twill, satin, poplin and velvet are weave or construction names, so each can be made from different fibers. A velvet can be cotton, silk or polyester.
- GSM (grams per square meter) is the weight. A higher GSM generally means a thicker, more structured cloth.
You may also see a yarn count, like cotton 60s. A higher count means a finer yarn and usually a smoother, lighter cloth. Always read composition, weave and weight together, never just one.
How to Check Fabric Composition at Home
No label? Maybe the cloth came from a tailor or a local market. You can get a rough idea with a few simple checks.
- Feel and drape. Cotton feels dry and slightly matte. Polyester often feels smoother and a little slippery.
- Crumple test. Squeeze the cloth in your fist for ten seconds. Cotton and linen hold creases. Polyester springs back.
- Burn test (small swatch only, over a sink, with care). Natural cellulose fibers like cotton burn quickly and leave soft grey ash with a smell like burnt paper. Polyester melts and leaves a hard bead.
These tests only give you a hint. If you are producing for customers or selling fabric, ask the supplier for the exact fabric composition in writing.
Why Fabric Composition Matters for Hand Block Printing
This is where our work in Bagru comes in. Block printing and natural dyeing are very sensitive to fabric composition.
Cotton is the most loved base for Bagru printing. It takes mordants, natural dyes and pigment prints evenly, and the colour holds after washing. Pure cotton also softens beautifully with age, which is why a hand block printed cotton cloth feels better in year two than on day one.
Polyester behaves differently. It does not absorb natural dyes like indigo, and prints can look patchy or sit on the surface and wear off. This is why traditional printers in Bagru work with natural fibers, and why we always tell visitors to check the fabric composition before choosing cloth for printing at home.
Before printing, our fabric goes through washing and preparation so that the fibers open up and the colour sits properly. If you want to see the full process, read our guide on what is hand block printing and our post on why pigment printing is a good first craft.
If you would like to work with the same kind of cloth we print on, our Bagru-printed cotton fabrics are available in our Etsy shop. You can also browse ready products on our products page.
Which Fabric Composition Is Right for You?
Use this as a quick guide.
- Summer clothing, kurtas, dupattas: 100% cotton, cotton-linen or linen. Breathable and cool.
- Everyday shirts and uniforms: cotton-polyester for easy care.
- Winter wear and pajamas: cotton flannel or cotton-wool. See our explainer on flannel cloth for details.
- Table linen, napkins, tote bags: cotton or cotton-linen. They wash well and hold printed colour.
- Anything you plan to dye or block print yourself: pure cotton, linen or silk. Avoid high-polyester blends.
- Fitted or stretch clothing: a fabric with 3–5% elastane.
Learn Fabric Composition by Doing It: Visit Our Bagru Workshop
Reading about fabric composition helps. Touching the cloth, printing on it and watching how the dye behaves helps a lot more.
At our studio in Bagru, you can print on real cotton with experienced artisans, see how different fibers take colour, and take your own printed piece home. Lunch is included, and you can choose the length that suits your trip:
- One-day workshop (9 AM to 2 PM, ₹3,000 per person, about $35): a hands-on introduction to Bagru pigment block printing.
- Two-day workshop (₹7,000 per person, about $80): natural inks, mordants, indigo and dabu resist printing, with three printed products.
- Longer courses for people who want to go deeper into natural dyes and different printing methods.
Whether you are a designer, a student or a traveller who simply loves textiles, you will leave knowing exactly why fabric composition matters. See all options and book your date on our workshops page, or read our full block printing workshop guide for Jaipur to plan your visit. If you want a dyeing-focused experience, have a look at our natural dyeing textile workshop in Rajasthan.
Curious about the studio and the family behind it? Visit our About Us page, or follow our daily work on Instagram.
Frequently Asked Questions About Fabric Composition
What does fabric composition mean? It means the fibers a fabric is made of and the percentage of each, such as 80% cotton and 20% polyester.
Where do I find the fabric composition? On the care label sewn inside a garment, on the bolt label or product page when buying fabric by the meter, or in the supplier’s specification sheet.
Is 100% cotton always better than a blend? Not always. 100% cotton is more breathable and softer, and takes dye better. A blend can be more durable and wrinkle-resistant. The best choice depends on use.
Does fabric composition affect printing and dyeing? Yes, strongly. Natural fibers like cotton, linen and silk absorb natural dyes and pigment prints well. High-polyester fabrics usually do not.
What is the difference between fabric composition and GSM? Composition tells you which fibers are in the cloth. GSM tells you how heavy it is per square meter. You need both to judge a fabric properly.
The Short Version
Fabric composition is simply the recipe of a cloth. Read the fibers, check the percentages, think about how you will wear, wash or print it, and the right choice becomes easy. And if you ever want to see that recipe come alive in colour, come to Bagru. Our team would love to show you.
Ready to try it yourself? Book a block printing workshop at Anaprinta or explore our hand block printed cotton fabrics on Etsy.
