6403.51.30.15 - With pigskin uppers

This HTS classification, 6403.51.30.15, specifically designates men's welt footwear with outer soles of leather and uppers made from pigskin, where the footwear covers the ankle. The "welt" construction is a key defining characteristic, referring to a specific method of attaching the upper to the sole, typically involving a strip of material (the welt) that is sewn to both. This meticulous construction method generally imparts durability and the ability to be resoled, distinguishing these boots from other footwear.

The primary distinction from its sibling category, 6403.51.30.30 ("Other"), lies in the specific upper material. While both fall under the broader umbrella of men's leather-soled, ankle-covering welt footwear, this particular code is exclusively for those featuring pigskin uppers. The sibling category would encompass men's welt boots of this type with uppers made from other types of leather, such as cowhide, calfskin, or sheepskin, provided they also meet the other criteria of this subheading.

As this is a leaf node in the HTS, there are no further subcategories. Therefore, the classification is final at this level, focusing on the precise combination of welt construction, leather outer sole, ankle coverage, pigskin upper, and intended for men. Importers and exporters should ensure that the product accurately matches all these criteria to avoid misclassification.