6106.90.30.30 - Subject to man-made fiber restraints (639)

This HTS classification, 6106.90.30.30, pertains to knitted or crocheted women's or girls' blouses and shirts made from textile materials other than cotton or wool, and specifically those that are subject to man-made fiber restraints. These restraints are critical factors in determining the correct classification and are often tied to import quotas or trade agreements. The category encompasses a wide variety of styles and designs as long as the material composition and the application of these specific restraints are met.

The distinction of this subcategory from its siblings lies directly in the material composition and associated trade regulations. Category 6106.90.30.10 covers similar garments subject to cotton restraints, while 6106.90.30.20 applies to those under wool restraints. Category 6106.90.30.40, conversely, covers garments of other textile materials that are *not* subject to these specific man-made fiber, cotton, or wool restraints. Therefore, the presence and nature of import restraints are the primary differentiating factors at this level.

As this classification represents a leaf node in the HTS structure, there are no further subcategories to introduce. Classification at this level is final, contingent upon accurate identification of the garment's material composition as being primarily man-made fibers and verification against any applicable man-made fiber restraint quotas or regulations as indicated by the "(639)" reference. Importers must ensure their documentation accurately reflects these details to comply with customs requirements.