Dimensional Stability Explained: How It Works in Performance Sportswear
Dimensional Stability is best understood as size change after washing. This entry explains how it behaves inside a finished garment rather than only in the laboratory.
What the term means
size change after washing, which is why the value appears on almost every technical data sheet. Working figures for Dimensional Stability normally sit around under 3% length, 4% width in mainstream production. Note AATCC 135 home laundering on the tech pack so nobody tests against an older revision.
Why it matters in practice
unstable fabric changes fit after first wash, so it influences buying decisions more than most buyers expect. Record elastane content alongside Dimensional Stability, because blends shift the measured value. A result outside under 3% length, 4% width usually points to process drift rather than to the fibre itself.
Typical values seen in activewear
under 3% length, 4% width. Ranges vary by construction, so compare like with like. Keeping reference values for Dimensional Stability lets suppliers quote without extra sampling rounds. Ask for conditioning details together with AATCC 135 home laundering, since both affect the reading.
How it is measured
AATCC 135 home laundering is the reference normally quoted on a test report. Working figures for Dimensional Stability normally sit around under 3% length, 4% width in mainstream production. Note AATCC 135 home laundering 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 Dimensional Stability, because blends shift the measured value. A result outside under 3% length, 4% width usually points to process drift rather than to the fibre itself.
