Mixed-fiber sets are classified based on the essential character of the set as a whole, or by the component that provides the chief value or weight. CBP guidance on sets generally requires classification under the heading applicable to the component that gives the set its essential character. A licensed customs broker should be consulted when fiber content differs significantly between components of a matched set.

Cambodia does not have a bilateral free-trade agreement with the United States, so goods originating there enter at the standard MFN duty rate. Importers should verify that country-of-origin determinations reflect where the substantial transformation occurred — particularly if fabric is sourced from a third country — since CBP applies the yarn-forward or tariff-shift standard for textile articles.