9902.13.52 - Socks of synthetic fibers, with uppers of neoprene measuring 3.5 mm in thickness and covered on both surfaces with knitted jersey fabric of nylon; each such sock having an integrated fold-down cuff of knitted jersey fabric of nylon, each cuff with a molded hook to allow connection to wading boot and designed to prevent debris and gravel from getting inside wading boot, such socks anatomically formed (provided for in subheading 6115.96.90)

This HTS category, 9902.13.52, specifically addresses socks constructed from synthetic fibers. A key defining characteristic is the presence of uppers made of neoprene, measuring 3.5 mm in thickness. These neoprene uppers are then covered on both surfaces with a knitted jersey fabric of nylon. Further distinct features include an integrated, fold-down cuff also made of knitted jersey fabric of nylon. This cuff is equipped with a molded hook designed for connection to wading boots, serving the purpose of preventing debris and gravel ingress. Finally, the socks are anatomically formed, indicating a design tailored to the human foot for improved fit and function.

Given that this is a leaf node within Chapter 99, there are no direct subcategories to introduce. Instead, it's crucial to understand that the items classified here are considered under "Temporary legislation; temporary modifications proclaimed pursuant to trade agreements legislation; additional import restrictions proclaimed pursuant to section 22 of the Agricultural Adjustment Act, as amended." This chapter is distinct from the standard commodity chapters of the HTSUS and is used to implement specific trade policies, quotas, or restrictions. Therefore, the classification here is not based on general commodity principles but rather on the unique provisions enacted under this special chapter.

The goods in this category are differentiated from general sock classifications (found in Chapters 61 and 62) by their specialized construction and intended use, particularly the integrated neoprene uppers, nylon jersey coverings, and the unique hook-equipped cuff for wading boots. While the description notes these socks are "provided for in subheading 6115.96.90," their classification under 9902.13.52 signifies that they are subject to specific temporary rules or restrictions that supersede or modify their general tariff treatment. This highlights the importance of consulting Chapter 99 for potential additional duties, quotas, or specific import requirements.