6506.99 - Of other materials:

This HTS category, 6506.99, encompasses "other materials" not specifically classified under preceding headings within Chapter 65, which deals with headgear and its parts. It serves as a residual category for headwear that does not fall into more defined classifications like those made of rubber or plastics (6506.91). The scope is broad, covering a variety of hats, caps, bonnets, and other head coverings for men, women, and children, provided they are not made from the materials covered by specific subheadings.

The key differentiating factor for 6506.99 is its material composition, excluding specific mentions found in sibling categories. For instance, while 6506.91.00 specifically addresses headgear of rubber or plastics, 6506.99.00.00 is for headgear made from any other material not otherwise enumerated. This includes, but is not limited to, materials such as natural or man-made fibers (other than those already classified), paper, straw, felt (not specifically excluded), or any combination thereof.

To further refine classification, 6506.99.00.00 is divided into subcategories. Heading 6506.99.30.00 specifically captures headgear fashioned from furskin, requiring careful examination of the primary material. For all other headwear not falling under the furskin designation, classification is directed to 6506.99.60.00, which serves as the final residual grouping for headgear not otherwise specified within the HTS.