6203.19.90.10 - Jackets imported as parts of suits (333)

This HTS classification covers jackets that are imported as integral parts of men's or boys' suits, where the suit is composed of textile materials other than those specifically enumerated in preceding subheadings. Crucially, these jackets are intended to be worn with matching trousers, breeches, or shorts, and may also be intended to be worn with a waistcoat, forming a three-piece suit. The "other textile materials" designation is key, distinguishing these from suits made of specific fibers like wool or fine animal hair, or man-made fibers.

This category is specifically for the *jackets* that are part of these suits. It differs from sibling category 6203.19.90.20, which specifically covers the trousers, breeches, and shorts that constitute parts of the same type of suit. Similarly, it is distinct from 6203.19.90.30, which classifies waistcoats imported as parts of suits. The defining characteristic here is the garment itself: the jacket component of a suit made from unspecified textile materials.

As this is a leaf node, there are no further subcategories for this specific classification. Therefore, classification within 6203.19.90.10 hinges on the jacket being imported as a component of a suit, where the suit's overall textile composition falls outside of more specific tariff lines, and the garment is indeed a jacket intended to be part of a coordinated ensemble.