6203.41.03.20 - Boys' (447)

This HTS classification pertains to boys' trousers specifically constructed from worsted wool fabric. The defining characteristic of these trousers is that they are made using wool yarn with an average fiber diameter not exceeding 18.5 microns. This finely spun wool contributes to a smoother texture and often a more refined appearance, suitable for various types of formal and semi-formal wear.

This category is distinguished from its sibling, 6203.41.03.10, which covers the same type of worsted wool trousers but for men. The distinction is solely based on the intended wearer, with this subcategory exclusively addressing garments sized and styled for boys. Both categories fall under the broader umbrella of recreational performance outerwear trousers made from wool or fine animal hair.

As this is a leaf node in the HTS classification system, there are no further subcategories. Therefore, the classification is finalized at this point based on the material (worsted wool yarn with specific micron diameter), type of garment (trousers), and intended wearer (boys). Classification at this level relies heavily on verifying the yarn's specifications and ensuring the garment's construction aligns with the description of worsted wool fabric.