6203.41.03.10 - Men's (447)

This HTS classification, 6203.41.03.10, specifically identifies men's trousers that are constructed from worsted wool fabric. A key defining characteristic of these trousers is the wool yarn used in their manufacture, which must exhibit an average fiber diameter of 18.5 microns or less. This precise measurement of fiber fineness is a critical factor for correct classification within this subcategory.

Distinguishing this category from its sibling, 6203.41.03.20, is straightforward: this code applies exclusively to men's trousers, whereas the sibling category covers boys' garments. Both fall under the broader heading of trousers, breeches, and shorts made of wool or fine animal hair, but the gender of the intended wearer is the differentiating factor at this level. As this is a leaf node, there are no further subcategories branching from this specific HTS code. Classification at this level relies solely on the material composition, the specific fabric type (worsted wool), and the precise measurement of the wool fiber diameter.