What Is the Best Fabric for Tracksuits in 2026? A Sourcing Guide for Apparel Brands

Choosing the best fabric for a tracksuit is not simply a matter of choosing cotton or polyester.

A complete tracksuit fabric specification normally combines three separate factors:

• Knit structure
• Fiber composition
• Fabric weight (GSM)

For example:

80% cotton / 20% polyester, 280 GSM French terry

This tells the manufacturer the fiber blend, knit construction and fabric weight.

Each element affects the final tracksuit differently—from softness and warmth to stretch, durability, structure and production cost.

This guide compares the most common tracksuit fabrics in 2026 and explains how to choose the right option for your collection.

Tracksuit Fabric: Three Specifications You Need to Confirm

When discussing fabric with a manufacturer, saying:

"I want cotton."

or:

"I want fleece."

is usually not specific enough.

A proper fabric specification should answer three questions.

The same fiber composition can feel completely different when knitted into fleece, French terry or interlock.

That is why brands should confirm all three specifications before starting sampling.

Common Knit Structures for Tracksuits

1. Fleece

Fleece has a brushed inner surface that creates a soft and warm feel.

It is commonly made from:

• Cotton
• Polyester
• Cotton/polyester blends

Fleece works particularly well for:

• Winter tracksuits
• Casual streetwear
• Lounge sets
• Heavyweight sweat sets

Typical fabric weights range from approximately 280–450 GSM.

Advantages

• Warm
• Soft against the skin
• Suitable for heavyweight garments
• Comfortable for casual wear

Things to Consider

Fleece can develop pilling over time depending on yarn quality, knitting density and finishing.

It is also less suitable for high-intensity training where breathability and quick drying are more important.

2. French Terry

French terry has a smooth outer face and small loops on the inside.

Unlike fleece, the loops are not heavily brushed.

This makes French terry:

• Lighter
• More breathable
• Less insulating
• Suitable for transitional seasons

Typical weights are approximately 220–320 GSM.

French terry is one of the most versatile options for everyday tracksuits because it sits between lightweight sportswear and heavyweight fleece.

3. Interlock

Interlock is a tightly knitted double-layer structure.

Compared with basic jersey, it normally has:

• A smoother surface
• More structure
• Better dimensional stability
• A substantial hand feel

High-density interlock around 350 GSM and above can work particularly well for premium or elevated tracksuits.

It creates a clean silhouette without relying on a heavily brushed interior.

Best For

• Premium matching sets
• Minimal streetwear
• Structured tracksuits
• Elevated casualwear

The trade-off is generally a higher fabric cost compared with basic fleece.

4. Scuba / Bonded Knit

Scuba is a smooth, structured knit with a slightly firm, sometimes neoprene-like hand feel.

It holds its shape well and creates a clean silhouette.

Typical weights may fall around 250–350 GSM.

It is often used for:

• Fashion-forward tracksuits
• Structured silhouettes
• Clean minimalist sets
• Modern zip-up jackets

Scuba is not normally the first choice for high-intensity sportswear because its dense structure can reduce breathability.

5. Velour

Velour has a soft, brushed pile surface and is strongly associated with retro and elevated lounge tracksuits.

It is commonly made from cotton/polyester blends.

Typical fabric weights are approximately 280–380 GSM.

Velour works particularly well for:

• Retro-inspired collections
• Lifestyle tracksuits
• Women's tracksuits
• Premium lounge sets

Its main strength is appearance and hand feel rather than technical performance.

6. Rib Fabric

Ribbing is normally used on specific parts of a tracksuit rather than for the whole garment.

Common applications include:

• Cuffs
• Waistbands
• Collars
• Jacket hems

Rib fabrics often combine cotton or polyester with spandex to improve stretch and recovery.

The rib should return to its original shape after stretching.

Poor recovery can cause cuffs and waistbands to become loose after repeated wear.

Fiber Content: What Should Your Tracksuit Be Made From?

The knit structure determines how the fabric is constructed.

Fiber content determines what the fabric is made from.

Both matter.

Polyester

Polyester is widely used in performance-oriented tracksuits because it offers:

• Good durability
• Shape retention
• Quick drying
• Moisture-management potential
• Good wash resistance

Polyester can be used alone or blended with cotton and elastane.

It is particularly suitable for sportswear and training tracksuits.

However, polyester on its own may feel less breathable or natural than cotton-rich fabrics.

Recycled Polyester (rPET)

Recycled polyester is becoming increasingly important for brands developing sustainability-positioned tracksuits.

When properly sourced, rPET can provide similar practical characteristics to conventional polyester while allowing brands to document recycled material content.

Brands making recycled-material claims should confirm the relevant documentation with the supplier.

Important Documentation

For GRS-certified recycled materials, brands should ask about:

• GRS certification
• Material sourcing documentation
• Transaction Certificates where applicable

A verbal claim that a fabric is "recycled" is not the same as documented recycled content.

Cotton

Cotton provides:

• Softness
• Breathability
• Natural hand feel
• Comfortable everyday wear

It works particularly well for:

• Lifestyle tracksuits
• Streetwear
• Lounge sets
• Casual matching sets

However, cotton absorbs moisture rather than drying as quickly as synthetic fibers.

It may therefore be less suitable for tracksuits designed primarily for intense training.

Nylon

Nylon is:

• Lightweight
• Strong
• Abrasion-resistant
• Quick-drying

It often has a smoother or slightly shinier appearance than cotton fabrics.

Nylon works well for:

• Lightweight tracksuits
• Technical tracksuits
• Travel clothing
• Performance-inspired designs

It may also be blended with other fibers to balance durability and comfort.

Spandex / Elastane

Spandex is normally blended with another fiber rather than used alone.

Its main purpose is to provide:

• Stretch
• Movement
• Recovery
• Better flexibility

It is particularly useful for training-oriented tracksuits.

The correct percentage depends on how much stretch the garment actually needs.

More elastane does not automatically mean better quality.

Too much stretch can change the drape and structure of the garment.

Tracksuit Fabric Weight (GSM) Guide

GSM means grams per square metre and describes the weight of the fabric.

It is one of the most useful specifications when comparing tracksuit fabrics.

220–260 GSM: Lightweight Tracksuits

This range is suitable for:

• Warm climates
• Lightweight sportswear
• Training
• Spring and summer collections

The fabric will generally drape more and feel less structured than heavyweight tracksuit materials.

280–350 GSM: Everyday Tracksuits

This is a useful middle range for many casual tracksuit collections.

It can provide enough structure while remaining comfortable across multiple seasons.

Suitable fabrics may include:

• French terry
• Midweight fleece
• Interlock
• Scuba

For brands unsure where to start, this range often provides a practical balance between comfort, weight and versatility.

350–500+ GSM: Heavyweight and Premium Tracksuits

Heavier fabrics create a more substantial feel.

They work particularly well for:

• Premium streetwear
• Winter collections
• Heavyweight matching sets
• Lounge tracksuits
• Structured silhouettes

However, higher GSM also affects:

• Garment weight
• Shipping cost
• Drying time
• Fabric consumption
• Seasonal suitability

A higher GSM does not automatically mean higher quality.

The yarn, knitting density and finishing still matter.

Tracksuit Fabric Comparison

Which Tracksuit Fabric Is Best for Different Uses?

There is no single fabric that works best for every tracksuit.

The right choice depends on the customer and intended use.

The intended use should be decided before fabric sourcing begins.

Sustainability and Certification

Sustainability claims need supporting documentation.

Brands developing recycled or lower-impact tracksuits should confirm the certification requirements before bulk production.

GRS

The Global Recycled Standard (GRS) is used to verify recycled material content and related supply-chain requirements.

When sourcing GRS-certified recycled polyester, brands should ask the supplier what certification and transaction documentation is available.

OEKO-TEX

OEKO-TEX Standard 100 is commonly used to verify that tested textile products meet limits for harmful substances.

It can be particularly relevant for:

• Children's clothing
• Next-to-skin products
• Brands with specific material safety requirements

Branded Recycled Fibers

Some suppliers may also offer branded recycled polyester programs such as Repreve® or similar materials.

These can support a sustainability story when the sourcing chain can be properly documented.

The important point is:

Do not wait until production is finished to ask for certification.

Documentation should be confirmed during fabric sourcing.

One Tracksuit Detail Brands Often Miss: Dye-Lot Consistency

A tracksuit is usually sold as a coordinated jacket-and-pant set.

That creates a quality-control issue that does not exist when producing a single garment:

The top and bottom need to match in colour.

Even when two fabrics use the same colour code, separate dye lots may show subtle shade differences.

These differences become particularly obvious when the jacket and pants are worn together in daylight.

How to Reduce Shade Differences

The safest production approach is to:

• Produce both pieces using the same fabric lot
• Dye the fabric together
• Cut the jacket and pants from the same production batch
• Approve colours under consistent lighting
• Keep reference swatches for bulk inspection

For matching sets, colour consistency should be treated as a production specification rather than an assumption.

Other Details That Affect Tracksuit Quality

Fabric is important, but it is only one part of a good tracksuit.

Brands should also check:

• Rib recovery
• Zipper quality
• Drawcord quality
• Stitching
• Pocket construction
• Shrinkage
• Colour fastness
• Print or embroidery quality
• Waistband elasticity
• Size consistency

A premium fabric will not make the finished tracksuit premium if the construction details are poorly executed.

How to Choose the Right Tracksuit Fabric

Before requesting a sample, answer these questions:

1. Is the tracksuit designed for sports, streetwear or loungewear?
2. Which climate will customers wear it in?
3. Should the fabric feel lightweight or substantial?
4. Do you want a structured or relaxed silhouette?
5. Is moisture management important?
6. Does the design require stretch?
7. Will the jacket and pants use exactly the same fabric?
8. Do you need recycled-material certification?
9. What retail price are you targeting?

Once these questions are clear, the fabric specification becomes much easier to define.

For example:

80% cotton / 20% polyester, 320 GSM French terry

is much more useful to a manufacturer than:

"I want a good cotton tracksuit fabric."

How Brad Apparel Supports Custom Tracksuit Production

Developing a tracksuit requires coordination between fabric sourcing, pattern development and matching-set production.

Brad Apparel supports brands through the main stages of custom tracksuit development.

Fabric & Accessory Sourcing

Through our Fabric & Accessory Sourcing service, brands can develop tracksuits using options such as:

• Fleece
• French terry
• Interlock
• Scuba
• Cotton blends
• Polyester blends
• Recycled polyester options
• Ribbing
• Zippers
• Drawcords
• Labels and packaging

Fabric selection should consider composition, knit structure and GSM together.

Custom Sweat Set Development

Our Custom Sweat Set Production service supports coordinated sets including:

• Hoodie and sweatpant sets
• Crewneck and jogger sets
• Zip-up jacket and pants
• Heavyweight streetwear sets
• Casual lounge tracksuits
• Custom branded matching sets

The top and bottom can be developed as one coordinated product rather than two unrelated garments.

Printing and Embroidery

Tracksuit branding can also be developed using different decoration methods.

Brad Apparel's Custom Printing Techniques include options such as:

• Screen printing
• Puff printing
• DTG
• DTF
• Silicone printing
• Heat transfer

Embroidery and appliqué can also be used for premium or streetwear-oriented tracksuit designs.

The correct method depends on the fabric composition, artwork and desired finish.

Sample Development

Before starting bulk production, the tracksuit sample should confirm:

• Fabric composition
• Knit structure
• GSM
• Colour
• Fit
• Jacket length
• Pant length
• Waistband
• Ribbing
• Zippers
• Printing or embroidery
• Shrinkage
• Matching colour between top and bottom

The purpose of sampling is not only to confirm appearance.

It is also to identify fabric and construction problems before they affect the entire order.

Contact Brad Apparel to discuss your tracksuit design, fabric requirements and production plan.

FAQ

What Is the Best Fabric for Tracksuits?

There is no single best fabric.

French terry works well for everyday tracksuits, fleece for warm and heavyweight sets, polyester for performance products, and high-density interlock for premium structured tracksuits.

The best option depends on the intended use.

What Is the Difference Between Fleece and French Terry?

Fleece has a brushed inner surface that provides more warmth and softness.

French terry has a looped inner surface and is generally lighter and more breathable.

Fleece is better suited to cold-weather and lounge tracksuits, while French terry works well for transitional seasons and everyday wear.

What GSM Is Best for a Tracksuit?

A general guide is:

• 220–260 GSM: lightweight and warm-climate tracksuits
• 280–350 GSM: everyday and transitional-season tracksuits
• 350–500+ GSM: heavyweight, winter and premium tracksuits

The ideal GSM depends on the intended fit, climate and fabric construction.

Is Polyester Good for Tracksuits?

Yes.

Polyester is durable, quick-drying and good at maintaining shape, making it particularly suitable for performance-oriented tracksuits.

It is also frequently blended with cotton or elastane.

Is Cotton Better Than Polyester for Tracksuits?

Neither is automatically better.

Cotton provides a softer and more natural hand feel.

Polyester generally provides better durability, shape retention and drying performance.

Many tracksuits use cotton/polyester blends to balance these characteristics.

Do I Need Certification for a Recycled Tracksuit?

If your brand plans to market the product using specific recycled-material claims, supporting certification and sourcing documentation are important.

For GRS-certified recycled materials, confirm the available certification and transaction documentation with your supplier before production.

How Do I Keep a Tracksuit Jacket and Pants the Same Colour?

The safest approach is to produce both pieces from the same fabric dye lot and production run.

Separate dye lots can produce subtle shade differences even when the colour specification is technically the same.

What Is the MOQ for Custom Tracksuits?

The minimum order depends on factors such as:

• Fabric type
• GSM
• Custom colour
• Certification requirements
• Printing or embroidery
• Zippers and accessories
• Size breakdown
• Overall design complexity

Contact Brad Apparel with your design or tech pack to discuss a suitable production plan.

Final Thoughts

Choosing the best tracksuit fabric requires more than deciding between cotton and polyester.

A complete specification should include:

• Knit structure
• Fiber composition
• GSM

For example:

80% cotton / 20% polyester, 280 GSM French terry

provides far more useful production information than simply requesting a "cotton tracksuit."

The right fabric should match the garment's intended climate, use, fit and price positioning.

For matching sets, brands should also pay close attention to dye-lot consistency so the jacket and pants remain visually coordinated.

For brands developing custom tracksuits, matching sweat sets or premium streetwear collections, contact Brad Apparel to discuss fabric sourcing, sampling and bulk production.