Importers generally need a commercial invoice, packing list, bill of lading, and a country-of-origin declaration. For textile products, CBP may also require a textile declaration (CF-3311 or equivalent) confirming fiber content, yarn construction, and fabric weight, all of which affect HTS classification and applicable duty rates.

Yes, significantly. Cotton canvas bags, synthetic-fiber bags, and jute bags each fall under different HTS headings with distinct duty rates. Polypropylene woven bags, for example, are classified differently from cotton tote bags, so accurate fiber content reporting on the commercial invoice is critical to avoid misclassification penalties.