Fabric & material engineering
Fabric decides how a garment looks, feels, performs and lasts, long before print or stitching comes into play. This guide explains sportswear fabric materials at the level a buyer needs: which fibers do what, how knit and weave structures change behavior, which finishes are worth paying for, and how to write a fabric spec a factory can follow without guessing.
Fabric weight is covered separately in our fabric and GSM selection guide. Here we focus on what the fabric is made of and how it is built.
- Fiber sets the base behavior: polyester for sublimation and quick drying, nylon for strength and soft stretch, cotton for comfort, blends for balance.
- Knit or weave structure changes breathability, opacity and stretch as much as fiber does.
- Finishes such as moisture-wicking or water repellency add cost, so choose them by use.
- Always specify fiber content, construction, weight, finish and test requirements together.
Fibers: what the fabric is made of
Polyester
The workhorse of sportswear. Polyester does not absorb much water, so it dries quickly, keeps its shape and resists abrasion. It is also the fiber that sublimation dyes bond with, which is why most team kits are polyester. The trade-off is that it can hold odor unless treated.
Nylon
Stronger and more abrasion-resistant than polyester, with a smoother, softer hand. Nylon is common in leggings, compression wear and light shells. It absorbs more moisture than polyester and is generally not suited to sublimation.
Spandex (elastane)
Spandex is blended in small amounts, often in the range of 5 to 20 percent, to give stretch and recovery. More spandex means more stretch and a closer fit, but it is rarely used alone.
Cotton
Soft, breathable and comfortable against skin, which is why it dominates hoodies, tees and casual teamwear. Cotton absorbs moisture and dries slowly, and it can shrink, so it suits casual wear better than high-intensity sport.
Poly-cotton blends
Blends such as 65/35 or 60/40 polyester-cotton combine cotton's softness with polyester's faster drying and lower shrinkage. They are a practical middle path for tracksuits, warm-ups and fleece.
Fiber comparison at a glance
| Fiber | Moisture handling | Stretch | Durability | Best for |
|---|---|---|---|---|
| Polyester | Dries fast, low absorption | Low alone, higher in knits | High | Jerseys, shorts, bibs, team kits |
| Nylon | Moderate | Good with spandex | Very high | Leggings, compression, light jackets |
| Cotton | Absorbs, dries slowly | Low | Medium | Hoodies, tees, casual wear |
| Poly-cotton | Balanced | Low | High | Tracksuits, warm-ups, fleece |
| Polyester + spandex | Dries fast | High | High | Training tops, fitted jerseys |
These are general characteristics. Actual performance depends on yarn quality, construction and finish.
Knit and woven structures
Two fabrics with the same fiber can behave very differently depending on how they are built.
Common knit structures
- Single jersey: a simple, lightweight knit used for tees and base layers.
- Birdseye mesh: a textured open knit with small holes for airflow. Standard for jerseys and bibs.
- Interlock: a smooth double knit that is opaque and stable. Used for polos, tracksuits and goalkeeper kits.
- Pique: a knit with a raised pattern that holds shape and hides sweat, typical for polos.
- French terry: loops on the inside, smooth outside. A lighter option for hoodies and shorts.
- Fleece: brushed on the inside for warmth. Used for heavyweight hoodies and warm-up suits.
- Rib: a stretchy structure for cuffs, hems and collars.
Woven fabrics
- Lightweight woven shells: thin, wind-resistant fabrics used in windbreakers and track jackets.
- Bonded softshell: a woven outer bonded to a fleece backing for warmth and light weather protection.
- Twill and heavier wovens: used where structure and durability matter, such as some pants.
Performance finishes
Finishes are applied to the fabric after it is made. Each adds cost, so choose what the garment will actually need.
- Moisture-wicking: moves sweat away from the skin so it spreads and dries faster. Suitable for training and match wear.
- Anti-microbial: limits odor-causing bacteria. Useful for garments worn close to the body.
- UPF protection: blocks ultraviolet light for outdoor and summer sports.
- Durable water repellent (DWR): a coating that makes water bead off. It makes a jacket water-resistant, not waterproof.
- Brushing: raises the surface of a knit for softness and warmth, as in fleece.
- Garment washes: acid, pigment, stone or vintage washes for a worn-in streetwear look.
Ask how long a finish lasts. Some wash out after a few launderings, so request wash durability results if performance matters.
Which fabric for which product
| Product | Suggested fiber | Suggested structure |
|---|---|---|
| Soccer and rugby jerseys | Polyester | Birdseye mesh or interlock |
| Training bibs | Polyester | Lightweight mesh |
| Referee jerseys | Polyester | Mesh or interlock |
| Polo shirts | Polyester or poly-cotton | Pique or interlock |
| Leggings and compression wear | Nylon or polyester with spandex | Stretch knit |
| Tracksuits and warm-up suits | Poly-cotton or polyester | Interlock, fleece or terry |
| Hoodies | Cotton or poly-cotton | French terry or fleece |
| Windbreakers | Polyester or nylon | Lightweight woven shell |
| Softshell jackets | Polyester | Bonded woven with fleece |
See the full sportswear range to compare products made from each fabric.
Fabric and decoration compatibility
- Sublimation: works on polyester and high-polyester fabrics, best on white or light colors. Not for cotton.
- Screen printing and DTF: suit cotton and poly-cotton, with ink behavior depending on stretch.
- Embroidery: needs a stable base. Very thin or stretchy fabrics can pucker.
Choose the fabric and the decoration method together. Our customization techniques page compares each method in detail.
How to write a fabric specification
A clear spec prevents most fabric disputes. Put these items in your tech pack:
- Fiber content, for example 100% polyester or 88% polyester, 12% spandex.
- Construction, for example birdseye mesh, interlock or brushed fleece.
- Weight and tolerance, as explained in our GSM guide.
- Finishes required, for example moisture-wicking or anti-microbial.
- Color reference and approval method.
- Shrinkage and colorfastness requirements.
Our sourcing guides on tech packs, sizing and patterns show how to organize the full document.
Testing and approval
Before bulk starts, fabrics are checked for weight, stretch recovery and moisture-wicking durability. You approve a physical master sample in 7 to 10 business days, and bulk is inspected against it to AQL 2.5. For performance garments, also ask about shrinkage, pilling resistance and colorfastness. See our manufacturing and QA process for each checkpoint.
Common fabric mistakes
- Choosing cotton for a high-intensity sport where fast drying matters.
- Ordering sublimation on a cotton or low-polyester base.
- Paying for finishes the garment does not need.
- Specifying GSM but not fiber content or construction.
- Assuming a water-repellent finish makes a jacket waterproof.
- Switching fabric between batches without approving a new sample.
Not sure which fabric fits your product? Send your tech pack or a reference garment using the quote or WhatsApp buttons below, and we will recommend a fabric.
FAQs: sportswear fabric materials
What is the best fabric for sportswear?
It depends on the sport and product. Polyester is the most common choice for jerseys and team kits because it dries fast and holds sublimation. Nylon and spandex blends suit leggings, and cotton or poly-cotton suits hoodies and casual wear.
What is the difference between polyester and nylon?
Nylon is stronger and softer with better abrasion resistance, while polyester dries faster and is better for sublimation. Both are used in activewear, often in different products.
Why is polyester used for sublimation?
Sublimation dye bonds with polyester fibers, which gives full-color artwork that lasts through washing. It does not bond well with cotton.
Is a water-repellent jacket the same as waterproof?
No. A durable water repellent finish makes water bead off the surface, so the jacket is water-resistant. Waterproof garments need a membrane or sealed construction.
How much spandex should a stretch fabric have?
It varies, but stretch fabrics often contain around 5 to 20 percent spandex. More spandex means more stretch and a closer fit.
Can you develop a custom fabric to my specification?
Yes. Send a reference garment or fabric swatch and we develop the fabric to your fiber, construction, weight and color specification, then confirm it with a physical sample.
What is the difference between GSM and fabric type?
GSM is weight per area, while fabric type describes fiber and construction. Both matter, which is why a fabric spec should include fiber content, structure and GSM together.