6104.43 - Of synthetic fibers:

This HTS category, 6104.43, specifically covers women's or girls' dresses that are knitted or crocheted and are primarily composed of synthetic fibers. These are distinct from other categories within 6104.4 (dresses) which are classified based on their fiber content. For instance, 6104.41.00 pertains to dresses of wool or fine animal hair, while 6104.42.00 is for those made of cotton. Additionally, dresses of artificial fibers are classified under 6104.44, and those of other textile materials fall under 6104.49.

The defining characteristic of this subcategory is its reliance on synthetic fibers, such as polyester, nylon, acrylic, or elastane, as the principal component by weight. This classification distinguishes it from dresses made from natural fibers or those with a significant blend of other materials.

Within 6104.43, further subdivisions exist to account for variations in material composition. The subcategory 6104.43.10 is designated for dresses containing 23 percent or more by weight of wool or fine animal hair, implying a blend where synthetic fibers are still dominant but a substantial portion of wool or fine animal hair is present. All other dresses meeting the synthetic fiber criteria and not falling into the wool blend subcategory are classified under 6104.43.20.