Define the activity and fit State the intended activity, silhouette, climate and skin-contact requirements before sourcing.

Evaluate construction, not only composition Fiber percentages do not describe knit structure, yarn, finishing or mechanical stretch. Compare GSM, width, stretch, recovery, surface and shade consistency.

Test the risk points Check opacity under stretch, color migration, pilling and dimensional stability where relevant. Agree laboratory methods for performance claims.

Approve a production standard Link the approved swatch to a supplier code, color standard and acceptable variation so bulk material can be checked consistently.