6104.13 - Of synthetic fibers:

This HTS category, 6104.13, specifically covers women's or girls' suits that are knitted or crocheted and are primarily composed of synthetic fibers. This includes matching sets of garments designed to be worn together as a suit, such as a jacket and trousers or a jacket and skirt, where the defining textile component is synthetic. The knitted or crocheted nature signifies the method of construction, resulting in a flexible and often less structured garment compared to woven alternatives.

It is important to distinguish this category from its sibling, 6104.19, which pertains to suits made of "other textile materials." While 6104.13 focuses exclusively on synthetic fibers, 6104.19 would encompass suits made from natural fibers like cotton or wool, or blends where synthetic fibers are not the predominant component by weight. The material composition is the key differentiating factor at this level.

Within the 6104.13 category, further subdivisions exist to refine classification based on the presence of other textile materials. Subcategory 6104.13.10.00 applies to suits containing 23 percent or more by weight of wool or fine animal hair, indicating a blend where synthetic fibers are still dominant but a significant portion of natural animal hair is also present. Conversely, subcategory 6104.13.20.00, labeled "Other," captures those synthetic fiber suits that do not meet the specified threshold for wool or fine animal hair content.