What factors do customers prioritize when selecting fabrics?
What factors do customers prioritize when selecting fabrics?
Introduction
When developing activewear, fabric GSM is a key specification, yet GSM alone cannot define fabric suitability.
GSM affects hand feel, stretch, drape, coverage, breathability and warmth. Fabrics with the same GSM may perform differently due to yarn, knit structure and finishing.
This guide explains how GSM impacts stretch recovery, compression support, breathability and moisture management. It covers fabric selection for different applications, fiber composition, sustainability certifications, opacity, seasonal weight matching, and commercial factors such as price, MOQ, sampling and lead time.
Rather than only choosing a GSM value, brands should consider GSM together with fiber, construction, finishing and sourcing conditions. Faybric provides functional stretch fabrics from lightweight 150 160 GSM to medium weight 200 260 GSM and heavy thermal fabrics for cold weather use.
What Does GSM Mean in Fabric?
GSM stands for grams per square meter.
Simply put, it describes the weight of one square meter of fabric.
For example:
| • 150 GSM = approximately 150 grams per square meter | |||
| • 200 GSM = approximately 200 grams per square meter | |||
| • 260 GSM = approximately 260 grams per square meter | |||
| • 300 GSM = approximately 300 grams per square meter |
Generally, a higher GSM means more material is contained in the same area. However, higher GSM does not automatically mean better fabric quality.
A lightweight fabric may be more suitable for a running top, while a higher-GSM fabric may be more suitable for leggings, compression garments or winter activewear.
GSM vs. Fabric Thickness
GSM and thickness are related, but they are not exactly the same.
Fabric thickness can also be influenced by:
• Yarn size
• Yarn construction
• Knitting structure
• Fabric density
• Finishing
• Brushing or raising
• Air-layer construction
This means two fabrics with similar GSM can have different physical thicknesses and completely different performance characteristics.
For professional fabric sourcing, buyers should therefore evaluate GSM together with composition, construction, stretch and finishing.
Why Does Fabric Weight Matter in Activewear?
Fabric weight can influence:
• Stretch and recovery
• Compression and support
• Breathability
• Moisture management
• Opacity and coverage
• Drape
• Warmth
• Durability
• Garment structure
The key is balance.A fabric that is too lightweight may offer excellent breathability but insufficient coverage. A fabric that is too heavy may provide greater structure and warmth but feel less breathable during high-intensity activities.
Lightweight vs. Medium vs. Heavyweight Activewear Fabrics
Fabric Weight
120–160 GSM
160–200 GSM
200–240 GSM
240–280 GSM
280–320 GSM
320+ GSM
General Characteristics
Lightweight, breathable, flexible
Lightweight to medium, balanced comfort
Medium weight, better coverage and structure
Medium-heavy, supportive
Heavy, warm and structured
Heavy-duty and highly structured
Typical Applications
Running tops, tanks, summer sportswear
Sports tops, yoga tops, lightweight leggings
Leggings, yoga wear, sports bras
High-stretch leggings, compression styles
Winter activewear, thermal sportswear
Cold-weather and specialized applications
These are development references rather than fixed industry rules. Fiber composition, knitting structure and finishing can significantly change final fabric performance.
1. How GSM Affects Stretch and Recovery
Higher GSM does not automatically mean less stretch.
Stretch performance depends on several factors, including:
• Elastane/spandex percentage
• Yarn construction
• Knitting structure
• Fabric density
• Finishing conditions
For example, Faybric offers a 160 GSM Nylon 88% + Spandex 12% pique fabric for lightweight activewear, while its 260 GSM Nylon 73% + Spandex 27% high-stretch double-sided twill provides a more substantial structure with high stretch. This demonstrates why GSM should always be considered together with elastane content and fabric construction.
2. How GSM Affects Compression and Support
Higher-GSM fabrics often provide a stronger and more substantial hand feel, which can contribute to support and compression.
They can be suitable for:
• Leggings
• Compression tights
• Sports bras
• Shapewear
• Fitted training garments
However, GSM alone does not determine compression.
For compression-oriented products, brands should evaluate:
GSM + Stretch + Recovery + Fabric Construction
rather than selecting fabric based only on weight.
3. How GSM Affects Breathability and Moisture Management
Lightweight fabrics can be advantageous for applications where airflow, moisture transportation and quick drying are important.
They are commonly considered for:
• Running
• Cycling
• Gym training
• Summer sportswear
• Lightweight base layers
Faybric's lightweight performance fabrics include approximately 150–160 GSM Sorona fabric, as well as lightweight polyester and mesh constructions around 130–155 GSM. However, lightweight does not automatically mean breathable.Fiber characteristics, yarn construction, knit structure, surface design and functional finishing also influence moisture management and airflow.
4. Functional Performance by Application
For B2B buyers, fabric selection should start with the end-use application, not simply the GSM.
Different activewear categories require different combinations of stretch, recovery, coverage and functional performance.
Yoga Wear
Yoga fabrics often need:
• Soft hand feel
• High stretch
• Good recovery
• Comfortable movement
• Breathability
• Moisture management
• Good opacity
For yoga leggings, a medium-weight fabric around 200–260 GSM can provide a useful balance between stretch, coverage and structure.
Running & Training Wear
Running and high-intensity training garments generally prioritize:
• Lightweight construction
• Breathability
• Moisture wicking
• Quick drying
• Lightweight comfort
• Freedom of movement
Fabric weights around 130–170 GSM can be considered for running tops where lightweight performance is important.
Sports Bras & Compression Wear
These products typically require:
• Stretch
• Recovery
• Support
• Coverage
• Shape retention
• Comfortable compression
A fabric around 200–280 GSM can be considered depending on the construction and performance target.
Swimwear
Swimwear requires more than simply selecting the correct fabric weight.
Important considerations can include:
• High stretch
• Recovery
• Coverage
• Dimensional stability
• Chlorine resistance
• Color fastness
• UV protection
The final GSM should be evaluated together with fabric construction, lining and the required level of coverage.
Autumn & Winter Activewear
Cold-weather activewear generally requires:
• Warmth
• Thermal insulation
• Coverage
• Softness
• Stretch
• Structure
Faybric's portfolio includes approximately 290 GSM polyester/spandex thermal fabric and heavier fleece constructions for colder-weather applications.
5. Fiber Composition, Sustainability & Certifications
GSM should never replace fiber selection.
Two fabrics can have the same GSM but completely different performance because of their fiber composition.
For example:
Fabric A: 200 GSM Recycled Nylon + Spandex
Fabric B: 200 GSM Polyester + Spandex
Their hand feel, moisture behavior, dyeing characteristics, stretch response, surface appearance and durability may differ.
For activewear brands, fiber selection may include:
• Nylon + Spandex
• Polyester + Spandex
• Recycled Nylon
• Recycled Polyester
• Bio-based materials
• Functional fiber blends
Sustainability requirements are also becoming an important part of B2B fabric development, particularly for brands supplying European and North American markets.
For export-oriented fabric sourcing, buyers may also need to review relevant compliance and certification documentation, such as:
• OEKO-TEX® STANDARD 100
• GRS (Global Recycled Standard)
• ISO 9001:2015
• ZDHC Supplier to Zero Level 1
• Higg FEM
The exact certification or testing package should be confirmed according to the buyer's market, product requirements and order specifications.
For recycled or sustainable activewear, Faybric's 200 GSM recycled nylon/spandex fabric, for example, uses 85% recycled nylon + 15% spandex and is positioned for sustainable activewear, yoga and sports applications.
For B2B buyers, the important point is that material composition, sustainability documentation and performance requirements should be evaluated together.
6. How GSM Affects Opacity and Coverage
For leggings, yoga pants and swimwear, coverage can be just as important as stretch.
A lightweight fabric that becomes transparent when stretched can create a serious product-quality problem.
Increasing fabric weight and density can help improve coverage, but GSM alone does not guarantee opacity.
Other factors include:
• Knitting density
• Yarn fineness
• Fabric construction
• Fiber characteristics
• Stretch level
• Surface finishing
For example, Faybric's 210 GSM nylon/spandex fabric uses a dense knit construction and 26% spandex to provide a balance of stretch, body and coverage.
7. How GSM Relates to Seasonal Activewear
Fabric weight can also help brands develop seasonal product lines.
Spring / Summer
Around 130–180 GSM can be considered when brands prioritize:
• Breathability
• Moisture management
• Lightweight construction
• Cooling feel
Suitable applications include running tops, tanks and lightweight training shirts.
All-Season
Around 180–240 GSM can provide a balance of:
• Coverage
• Stretch
• Comfort
• Breathability
• Versatility
This range can work for yoga leggings, sportswear, athleisure and fitted training apparel.
Autumn / Winter
Around 240–320+ GSM can provide additional:
• Warmth
• Coverage
• Structure
• Thermal comfort
8. Price, MOQ, Sampling Speed & Lead Time
For B2B fabric buyers, technical specifications are only one part of the sourcing decision.
A fabric may meet the required GSM, composition and performance targets, but the project also needs to be commercially workable.
Four factors are particularly important:
Price
Fabric cost can be affected by:
• Fiber type
• Yarn quality
• GSM
• Fabric construction
• Spandex percentage
• Dyeing requirements
• Functional finishing
• Order quantity
• Number of colors
• Testing and certification requirements
Therefore, buyers should compare quotations based on the same fabric specification, rather than comparing price alone.
MOQ
Minimum Order Quantity may vary according to:
• Fabric construction
• Color
• Yarn selection
• Dyeing process
• Functional finishing
• Custom development requirements
For a new collection, buyers should confirm whether MOQ applies per color, per fabric quality or to the complete order.
This is especially important when a collection contains multiple colors or several different fabric constructions.
Sampling Speed
Before bulk production, buyers should normally evaluate:
1. Fabric swatch
2. Color/lab dip if required
3. Sample yardage
4. Garment prototype
5. Performance testing
6. Approved bulk reference
A clear sampling process helps reduce the risk of differences between the development sample and bulk production.
Lead Time
Lead time can include:
Fabric development → Sampling → Color approval → Production → Dyeing → Finishing → Inspection → Shipment
The actual schedule depends on whether the buyer selects an existing fabric or requests a new construction, color, yarn or functional finish.
For activewear sourcing, sample approval and specification confirmation should therefore be included in the overall product development schedule rather than considering only the final production period.
Real Fabric Weight Examples from Faybric
Faybric's fabric portfolio illustrates how different GSM levels can serve different activewear requirements.
Fabric
Sorona Performance Fabric
Nylon Pique
Recycled Nylon Spandex
Double-Faced Nylon Spandex
High-Stretch Nylon Spandex
Thermal Polyester Spandex
Double-Sided Poly Spandex
Thermal/Fleece Construction
GSM
150–160
160
200
210
260
290
260–300
380
Composition
Sorona 75% + Polyester 25%
Nylon 88% + Spandex 12%
Recycled Nylon 85% + Spandex 15%
Nylon 74% + Spandex 26%
Nylon 73% + Spandex 27%
Polyester 84% + Elastane 16%
Polyester 86% + Spandex 14%
Nylon + Polyester + Elastane
Main Characteristics
Lightweight, breathable, moisture wicking
Lightweight, breathable, stretch
Sustainable, high stretch
Stretch, body, coverage
High stretch, structured
Thermal comfort, warmth
Soft, supportive, substantial
Heavy warmth, cold-weather performance
Why Knit Structure Can Be More Important Than GSM
Two fabrics with identical GSM can perform differently because their knitting structures are different.
Important construction variables include:
• Gauge
• Stitch density
• Single jersey
• Interlock
• Rib
• Mesh
• Double-faced construction
• Jacquard
• Brushed construction
For example, Faybric's 210 GSM fabric uses a 32-gauge construction, while its 200 GSM recycled nylon fabric uses a weft-knitted structure. Similar GSM does not mean identical hand feel or performance.
Therefore, professional fabric development should evaluate:
GSM + Composition + Construction + Stretch + Recovery + Finishing + Functional Performance
How to Choose the Right Activewear Fabric
Instead of choosing GSM first, brands can follow a more complete development process.
Step 1 — Define the End Use
Yoga? Running? Swimwear? Outdoor? Underwear? Training?
Step 2 — Define the Performance Target
Stretch? Recovery? Cooling? Moisture wicking? UV protection? Warmth?
Step 3 — Select the Fiber
Nylon, polyester, recycled nylon, recycled polyester, bio-based materials or blends.
Step 4 — Select GSM
Choose an approximate weight according to coverage, comfort and performance requirements.
Step 5 — Select Knit Structure
Choose a construction that supports the required stretch, breathability and surface characteristics.
Step 6 — Confirm Functional & Compliance Requirements
Define the required functional performance, sustainability targets, testing and certification documentation.
Step 7 — Confirm Commercial Requirements
Review:
• Target price
• MOQ
• Sample quantity
• Sampling timeline
• Bulk quantity
• Production lead time
• Delivery requirements
Step 8 — Test and Approve the Fabric
Evaluate:
• GSM
• Width
• Stretch
• Recovery
• Shrinkage
• Pilling
• Abrasion
• Color fastness
• Functional performance
Only after the fabric meets the required specifications should the production specification be finalized.
FAQ
Is higher GSM always better for activewear?
No. Higher GSM can provide greater coverage, structure or warmth, while lightweight fabrics may be more suitable for breathable, high-intensity sportswear.
Does higher GSM mean thicker fabric?
Not necessarily. GSM and physical thickness are related but not identical. Yarn size, knitting structure and finishing can create significant differences.
What GSM is suitable for leggings?
There is no universal answer. Around 200–260 GSM can provide a useful balance of coverage, stretch and structure for many leggings, but the final choice depends on fiber, construction and intended performance.
Is 150 GSM suitable for activewear?
Yes. Lightweight 150–160 GSM fabrics can be suitable for running tops, lightweight sportswear and moisture-management applications.
Is 300 GSM too heavy for activewear?
Not necessarily. Around 300 GSM can be suitable for thermal, brushed, winter or highly structured activewear, while it may be excessive for lightweight summer running tops.
Does GSM determine fabric quality?
No. GSM is only one specification. Fiber quality, yarn construction, knitting, stretch, recovery, finishing and testing all contribute to final fabric performance.
Choose the Right Activewear Fabric with Faybric
Choosing an activewear fabric is not simply a matter of selecting a higher or lower GSM.
The right material needs to balance:
GSM + Fiber + Yarn + Knit Structure + Stretch + Recovery + Finishing + Functional Performance + Commercial Requirements
A 150 GSM fabric may be appropriate for lightweight running apparel, while a 210–260 GSM fabric may provide the coverage and support required for leggings. For cold-weather products, 290 GSM or heavier thermal and fleece constructions can provide additional warmth and protection.
Faybric offers a range of Nylon & Spandex, Polyester & Spandex, Recycled Nylon, Recycled Polyester and functional performance fabrics, with customizable options for different applications and performance requirements.
Looking for a fabric for your next collection?
Whether you are developing yoga wear, sportswear, running apparel, swimwear, underwear or outdoor activewear, Faybric can help you evaluate the right combination of fabric weight, composition, construction and functional requirements.
Send us your target GSM, reference fabric, composition, application, required function or target quantity. Our team can help you develop a suitable fabric solution for sampling and bulk production.
Contact Faybric today to discuss your custom fabric requirements and request a fabric sample or development consultation.
