Two-Way Stretch Explained: How It Works in Performance Sportswear
Two-Way Stretch is best understood as extension mainly across the width. This entry explains how it behaves inside a finished garment rather than only in the laboratory.
What the term means
extension mainly across the width, which is why the value appears on almost every technical data sheet. Working figures for Two-Way Stretch normally sit around 20-40% typical in mainstream production. Note ASTM D6614 stretch woven test on the tech pack so nobody tests against an older revision.
Why it matters in practice
it suits wovens where length stability is needed, so it influences buying decisions more than most buyers expect. Record elastane content alongside Two-Way Stretch, because blends shift the measured value. A result outside 20-40% typical usually points to process drift rather than to the fibre itself.
Typical values seen in activewear
20-40% typical. Ranges vary by construction, so compare like with like. Keeping reference values for Two-Way Stretch lets suppliers quote without extra sampling rounds. Ask for conditioning details together with ASTM D6614 stretch woven test, since both affect the reading.
How it is measured
ASTM D6614 stretch woven test is the reference normally quoted on a test report. Working figures for Two-Way Stretch normally sit around 20-40% typical in mainstream production. Note ASTM D6614 stretch woven test 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 Two-Way Stretch, because blends shift the measured value. A result outside 20-40% typical usually points to process drift rather than to the fibre itself.
