6115.99 - Of other textile materials:

This HTS classification, 6115.99, encompasses knitted or crocheted hosiery and footwear without applied soles, excluding those made from wool or fine animal hair, cotton, synthetic fibers, or artificial fibers where the primary material is silk or silk waste. This category serves as a residual for items not specifically detailed in other subheadings under 6115.9.

Distinguishing this category from its siblings, 6115.94, 6115.95, and 6115.96 is crucial. While those subheadings clearly delineate hosiery based on whether they are predominantly composed of wool or fine animal hair, cotton, or synthetic fibers respectively, 6115.99 captures those made of other textile materials. It is important to note that artificial fibers (man-made fibers other than synthetic) will also find their classification within this broader group if not otherwise specified.

Within 6115.99, further distinctions are made based on specific material compositions. Subcategory 6115.99.40.00 is reserved for items where silk or silk waste constitutes 70 percent or more of the total weight, reflecting a high silk content. The remaining items, not meeting this silk threshold, fall under the residual subheading 6115.99.90.00, which acts as a catch-all for all other textile materials not explicitly covered elsewhere in the 6115 chapter.