6406.90.15 - Of textile materials

This HTS subcategory, "Of textile materials" (6406.90.15), encompasses parts of footwear that are predominantly constructed from textile fabrics, excluding those primarily made of rubber or plastics, or leather. This includes items such as textile uppers that are not yet attached to outer soles, textile sock linings, and other internal textile components designed to fit within footwear. Additionally, removable textile insoles, textile heel cushions, and similar textile articles intended for comfort or support within shoes also fall under this heading.

When differentiating from its siblings, this category is distinct from 6406.90.30 ("Of rubber or plastics") because the primary material here is textile, not synthetic polymers. It also differs from 6406.90.60.00 ("Of leather") and 6406.90.90.00 ("Other") by specifically identifying textile as the dominant component. Therefore, the key classification criterion is the identification of textile materials as the principal constituent of the article.

The subcategories within 6406.90.15 further refine this classification based on the type of textile material. The presence of distinct subcategories for "Of man-made fibers" and "Other" (which would typically encompass natural fibers like cotton or wool, or blends not dominated by man-made fibers) allows for a more granular categorization of these textile footwear parts, facilitating precise record-keeping and duty assessment.