6103.49 - Of other textile materials:

This HTS category, 6103.49, encompasses knitted or crocheted trousers, bib and brace overalls, breeches, and shorts for men and boys, specifically those not made from wool, fine animal hair, cotton, synthetic fibers, or artificial fibers. It serves as a catch-all for items crafted from textile materials not accounted for in the more specific sibling categories. This includes, for example, garments made from silk, linen, or various blends that do not meet the predominant material requirements of other subheadings.

To properly classify under 6103.49, it is crucial to first examine the material composition of the garment. If a garment is primarily composed of wool or fine animal hair, it would fall under 6103.41. Similarly, cotton-based garments would be classified under 6103.42, and those predominantly of synthetic fibers under 6103.43. When a garment's primary component is neither of these, and it is also not primarily artificial fibers, it then falls into this broader category for "other textile materials."

Within 6103.49, further distinctions are made based on specific material content or if the garment does not fit into more specialized subheadings. Subcategory 6103.49.40 specifically addresses garments that contain 70 percent or more by weight of silk or silk waste, providing a distinct classification for these premium silk items. All other knitted or crocheted trousers, bib and brace overalls, breeches, and shorts for men and boys not covered by the preceding more specific categories, and not primarily silk, are classified under the residual subheading 6103.49.80.