Squat-Proof Opacity Why Shipments Get Rejected Over This
Many disputes come down to Squat-Proof Opacity. Below is what inspectors check and why shipments fail.
The core definition
resistance to becoming see-through under stretch. Working figures for Squat-Proof Opacity normally sit around above 96% opacity in mainstream production. Note AATCC 183 transmission with photography on the tech pack so nobody tests against an older revision.
Most common cause of failure
Results usually fall outside above 96% opacity because the target was never written into the order. Record elastane content alongside Squat-Proof Opacity, because blends shift the measured value. A result outside above 96% opacity usually points to process drift rather than to the fibre itself.
How it is checked
Inspection and laboratory work both refer to AATCC 183 transmission with photography. Keeping reference values for Squat-Proof Opacity lets suppliers quote without extra sampling rounds. Ask for conditioning details together with AATCC 183 transmission with photography, since both affect the reading.
Related faults
it is the most common reason leggings are returned, so related complaints often point back to this single parameter. Working figures for Squat-Proof Opacity normally sit around above 96% opacity in mainstream production. Note AATCC 183 transmission with photography on the tech pack so nobody tests against an older revision.
Avoiding rejection
Agree targets, tolerances and the method before production, then test per lot rather than per shipment. Record elastane content alongside Squat-Proof Opacity, because blends shift the measured value. A result outside above 96% opacity usually points to process drift rather than to the fibre itself.
