In yarn-dyed fabrics, the color pattern is created by weaving pre-dyed yarns together, so the color penetrates the full cross-section of each yarn. Printed fabrics receive their pattern after weaving, applied to the fabric surface. CBP and trade auditors can distinguish the two by examining yarn cross-sections under magnification, which is relevant when a fabric's classification is disputed.

Certain cotton and manmade-fiber woven fabrics from specific origins have been subject to antidumping or countervailing duty orders in the past. Importers should check the USITC and Commerce Department's active order lists against the specific HTS subheading and country of origin before shipment, as applicability depends on the precise tariff line and supplier country.