Why GSM Is Important When Choosing Sportswear Fabric

 When sourcing knitted fabric for sportswear, GSM is one of the specifications manufacturers frequently evaluate.

GSM stands for grams per square metre and indicates the weight of the fabric.

But what does GSM actually mean for sportswear?

Lightweight GSM

Lightweight fabrics can be useful when manufacturers want a lighter garment with reduced fabric weight.

Potential applications include:

  • Running T-shirts
  • Lightweight training tops
  • Summer activewear
  • Performance apparel

Medium GSM

Medium-weight fabrics can provide a balance between coverage, comfort and durability and may be suitable for various sportswear products.

Higher GSM

Higher-weight fabrics may provide greater coverage and structure depending on the fabric construction.

GSM Isn't the Only Specification

A common mistake is selecting fabric solely according to GSM.

Performance can also be influenced by:

  • Fibre composition
  • Yarn characteristics
  • Knit construction
  • Stretch
  • Recovery
  • Finishing
  • Surface structure

Therefore, two fabrics with identical GSM can still have completely different performance characteristics.

Sample Testing Is Essential

Before bulk purchasing, manufacturers should test samples for shrinkage, stretch recovery, pilling, colour fastness and washing performance.

For more information about selecting the appropriate fabric for sportswear manufacturing, know more at kaapd.

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