How to Choose the Right Fabric GSM for Activewear?
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- Dec 16,2025
Fabric GSM (grams per square meter) directly affects opacity, support, breathability, durability, and overall wear performance in activewear.
Based on 15+ years of activewear manufacturing experience at Ohsurewear, choosing the right GSM is not about “heavier is better,” but about matching fabric weight to function, movement, and brand positioning.
Below is a practical, factory-level guide used in real OEM & ODM production.
1️⃣ What Does GSM Mean in Activewear Manufacturing?
GSM measures fabric weight per square meter. In activewear, GSM influences:
• Thickness and coverage (squat-proof level)
• Compression and support
• Heat retention vs breathability
• Fabric durability over repeated wear and washing
From a manufacturer’s perspective, GSM must always be evaluated together with fiber composition and knit structure, not in isolation.
2️⃣ Low GSM Fabrics (160–200 GSM)
Best for: Light-support tops & breathable layers
Common applications
• Lightweight sports bras (low impact)
• Yoga tops and tanks
• Summer training wear
Characteristics
• High breathability
• Lightweight and flexible feel
• Faster drying
Limitations
• Limited compression
• Not suitable for squat-proof leggings
At Ohsurewear, low GSM fabrics are typically used for upper-body activewear, not bottoms.
3️⃣ Medium GSM Fabrics (210–250 GSM)
Best for: Everyday leggings & mid-support sports bras
This is the most versatile GSM range in bulk activewear production.
Common applications
• Yoga and gym leggings
• Medium-support sports bras
• All-season activewear sets
Why this range works
• Balanced stretch and support
• Improved opacity for leggings
• Comfortable for long wear
Most core leggings at Ohsurewear are developed within this GSM range for commercial-ready performance.
4️⃣ High GSM Fabrics (260–320 GSM)
Best for: Compression leggings & high-impact sports bras
High GSM fabrics are used when support and structure are the priority.
Common applications
• High-compression leggings
• Running or HIIT sports bras
• Sculpting or shaping collections
Key benefits
• Enhanced compression and muscle support
• Superior squat-proof performance
• Better shape retention over time
Trade-offs
• Reduced breathability
• Heavier hand feel
This GSM range is commonly paired with nylon/polyamide + Lycra blends in premium collections at Ohsurewear.
5️⃣ GSM Alone Is Not Enough — Construction Matters
From a professional manufacturing standpoint, GSM must be considered alongside:
• Fiber composition (nylon vs polyester)
• Knit type (single jersey, interlock, double-knit)
• Yarn quality and elastane ratio
• Finishing processes (brushed, sanded, compacted)
A well-constructed 230 GSM double-knit fabric can outperform a poorly made 280 GSM fabric.
6️⃣ Choosing GSM Based on Activity Type
| Activity Type | Recommended GSM |
| Yoga / Pilates | 210–230 GSM |
| Gym Training | 220–250 GSM |
| Running / HIIT | 240–300 GSM |
Lifestyle / Athleisure | 200–230 GSM |
At Ohsurewear, GSM selection always starts with end-use analysis, not price alone. | |
Manufacturer Insight from Ohsurewear
One of the most common mistakes brands make is over-specifying GSM in hopes of better quality. In reality, excessive GSM can compromise comfort, flexibility, and wearability.
Professional activewear development focuses on:
• Functional performance
• Long-term durability
• Consistent bulk production results
That’s why Ohsurewear evaluates GSM together with fabric structure, stretch recovery, and real wear testing before final approval.