6403.19.50.31 - With pigskin uppers

This HTS subcategory specifically covers sports footwear designed for women, where the outer sole is constructed from rubber, plastics, leather, or composition leather, and the upper is made of leather. The defining characteristic of this classification is the presence of pigskin as the material for the footwear's upper. This denotes a specific type of leather upper within the broader category of leather-upholstered sports footwear for women.

Distinguishing this category from its sibling, 6403.19.50.61 "Other," is crucial. While the sibling covers other types of women's leather sports footwear not specified by material, this classification is exclusively for those featuring pigskin uppers. The "Other" category would encompass women's leather sports shoes made with cowhide, sheepskin, or other leathers not of swine origin, or even if the upper material itself is not definitively pigskin.

As this is a leaf node within the HTS structure, there are no further subcategories to introduce. Classification ceases at this specific level, meaning that any women's sports footwear with a leather outer sole and pigskin uppers will be classified under 6403.19.50.31, provided it meets all preceding criteria for sports footwear and leather uppers. Practical application would involve confirming the material composition of the upper to ensure accurate declaration.