Skewing and Spirality Explained: How It Works in Performance Sportswear
Skewing and Spirality is best understood as twisting of the knitted loop structure. This entry explains how it behaves inside a finished garment rather than only in the laboratory.
What the term means
twisting of the knitted loop structure, which is why the value appears on almost every technical data sheet. Working figures for Skewing and Spirality normally sit around below 3% displacement in mainstream production. Note AATCC 179 skewness on the tech pack so nobody tests against an older revision.
Why it matters in practice
visible twisting ruins garment appearance, so it influences buying decisions more than most buyers expect. Record elastane content alongside Skewing and Spirality, because blends shift the measured value. A result outside below 3% displacement usually points to process drift rather than to the fibre itself.
Typical values seen in activewear
below 3% displacement. Ranges vary by construction, so compare like with like. Keeping reference values for Skewing and Spirality lets suppliers quote without extra sampling rounds. Ask for conditioning details together with AATCC 179 skewness, since both affect the reading.
How it is measured
AATCC 179 skewness is the reference normally quoted on a test report. Working figures for Skewing and Spirality normally sit around below 3% displacement in mainstream production. Note AATCC 179 skewness on the tech pack so nobody tests against an older revision.
Frequent mistakes
Comparing results from different standards, testing unwashed fabric, and writing the target without tolerance are the common errors. Record elastane content alongside Skewing and Spirality, because blends shift the measured value. A result outside below 3% displacement usually points to process drift rather than to the fibre itself.
