Compression Level Specification Targets for Buyers
Setting Compression Level correctly on a tech pack prevents most later disputes. Targets belong on the page before the first fabric sample.
Where to write it
Place Compression Level next to composition and weight so all three are quoted as one package. Working figures for Compression Level normally sit around light 8-15 mmHg, firm 20-30 mmHg in mainstream production. Note RAL-GZ 387 compression classes on the tech pack so nobody tests against an older revision.
Reference level
Typical activewear expectation: light 8-15 mmHg, firm 20-30 mmHg. Record elastane content alongside Compression Level, because blends shift the measured value. A result outside light 8-15 mmHg, firm 20-30 mmHg usually points to process drift rather than to the fibre itself.
Tolerances that work
Allow a small tolerance rather than a fixed number, since normal process variation exists in every lot. Keeping reference values for Compression Level lets suppliers quote without extra sampling rounds. Ask for conditioning details together with RAL-GZ 387 compression classes, since both affect the reading.
Verification method
Confirm with RAL-GZ 387 compression classes and keep the report against the bulk record. Working figures for Compression Level normally sit around light 8-15 mmHg, firm 20-30 mmHg in mainstream production. Note RAL-GZ 387 compression classes on the tech pack so nobody tests against an older revision.
Commercial note
Tightening beyond practical need raises cost without improving garment life, so set the tightest target only where it protects the customer. Record elastane content alongside Compression Level, because blends shift the measured value. A result outside light 8-15 mmHg, firm 20-30 mmHg usually points to process drift rather than to the fibre itself.
