6403.91.90.25 - With pigskin uppers

This classification, HTS Code 6403.91.90.25, specifically identifies footwear that covers the ankle and is not otherwise specified. The defining characteristic of this category is the presence of pigskin in the uppers of the footwear. These are considered "other" footwear within the broader category of footwear with outer soles of rubber, plastics, leather, or composition leather, and "other" within the subgroup of footwear covering the ankle, and "other" again in a further subdivision.

This specific HTS code distinguishes itself from its sibling category, 6403.91.90.45 ("Other"), by the explicit material requirement for the upper. While 6403.91.90.45 would encompass any footwear covering the ankle, with outer soles of the specified materials, and with uppers of leather (but not pigskin or other specified materials), this code is exclusively for those featuring pigskin uppers. The context is further refined by its position under "For other persons" and "For women," indicating the intended demographic for these particular pigskin footwear items.

As this is a leaf node within the HTS classification structure, there are no further subcategories to introduce. The classification ends with the specific designation of footwear for women, with pigskin uppers, that covers the ankle, and meets the general criteria for its parent categories. This level of detail ensures precise identification for customs purposes, particularly when determining duty rates and import/export regulations based on the precise composition and intended user of the footwear.