What Fabric GSM Means for Activewear
Learn how fabric GSM affects activewear weight, coverage, warmth, drape and cost-and why higher GSM does not automatically mean better yoga leggings.
GSM (grams per square meter) is a standard measure of fabric weight. Understanding GSM helps brands select the right fabric for their activewear products.
GSM Ranges for Activewear
120-160 GSM (Lightweight)
Ultra-light, breathable fabrics ideal for summer tops and hot yoga. May lack opacity for leggings.
160-200 GSM (Medium)
Balanced weight suitable for most yoga tops and lighter leggings. Good moisture management.
200-260 GSM (Medium-Heavy)
Provides structure, compression and opacity. Common for premium leggings and sports bras.
260+ GSM (Heavy)
Maximum coverage and structure. Used for outerwear and performance jackets.
GSM Does Not Equal Quality
Higher GSM does not automatically mean better fabric. A 180 GSM fabric with excellent yarn quality, knitting structure and finishing can outperform a 250 GSM fabric with poor construction.
Factors Beyond GSM
Yarn Quality
Finer, longer fibers produce smoother, more durable fabrics at lower GSM.
Knitting Structure
Different knit structures (single jersey, double knit, ribbed) behave differently at the same GSM.
Finishing
Processes like brushing, calendering and compacting affect hand feel, opacity and performance.
Composition
Nylon-spandex blends typically offer better recovery and durability than polyester-spandex at similar GSM.
Selecting GSM for Your Product
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