6104.53.10.00 - Containing 23 percent or more by weight of wool or fine animal hair (442)

This HTS category specifically covers women's or girls' skirts and divided skirts that are knitted or crocheted, and are predominantly composed of synthetic fibers. The key defining characteristic is the material content, requiring that the garment contain 23 percent or more by weight of wool or fine animal hair, even though the primary classification within this sub-heading points towards synthetic fibers. This specific composition, when met, dictates its placement within this particular sub-category.

The distinction from sibling categories, such as 6104.53.20, lies in the explicit mention of the wool or fine animal hair content. While other categories at this level might cover skirts of synthetic fibers, this sub-heading is for those that *also* meet the threshold for wool or fine animal hair, creating a niche for blended synthetic and animal hair fabrics. The presence of these natural fibers, above the specified weight percentage, is the critical differentiator.

As this is a leaf node in the HTS classification, there are no further subcategories to introduce. Classification within 6104.53.10.00 is definitive once the criteria of being a knitted or crocheted skirt or divided skirt for women or girls, composed of synthetic fibers and containing 23 percent or more by weight of wool or fine animal hair, are met. This ensures precise identification for customs purposes.