6104.63.20.06 - Containing 5 percent or more by weight of elastomeric yarn or rubber thread (648)

This classification covers women's or girls' trousers and breeches, knitted or crocheted, made from synthetic fibers, which are not specifically categorized elsewhere within the "Other" subcategories. The defining characteristic of this particular code, 6104.63.20.06, is that the garments must contain 5 percent or more by weight of elastomeric yarn or rubber thread. This inclusion of stretchable material is crucial for classification and often relates to comfort, fit, or specific functional designs of the apparel.

Distinguishing this category from its sibling, 6104.63.20.11 (also "Other"), hinges solely on the presence and proportion of elastomeric yarn or rubber thread. While both fall under "Other" trousers and breeches of synthetic fibers, the "06" code specifically identifies those with significant stretch content, whereas the "11" code would encompass similar garments lacking this particular material composition. Therefore, the weight percentage of elastomeric yarn or rubber thread is the primary differentiating factor.

As this is a leaf node in the HTS structure, there are no further subcategories. Classification under 6104.63.20.06 is final for women's or girls' knitted or crocheted trousers and breeches of synthetic fibers that meet the specified elastomeric yarn or rubber thread content. Practical classification will involve verifying material composition through laboratory analysis or manufacturer declarations to confirm the weight percentage requirement.