6103.43.10 - Containing 23 percent or more by weight of wool or fine animal hair

This HTS category, 6103.43.10, specifically classifies men's or boys' trousers and breeches, knitted or crocheted, that are made of synthetic fibers and contain 23 percent or more by weight of wool or fine animal hair. The "Of synthetic fibers" parent category indicates that synthetic materials form a significant component of these garments. The crucial distinguishing factor for this subcategory is the presence of a substantial amount of wool or fine animal hair, setting it apart from other trousers, breeches, and shorts within the broader "Of synthetic fibers" classification.

This classification acts as a specific refinement for trousers and breeches, differentiating them from shorts. While both fall under the general umbrella of men's or boys' legwear made from synthetic fibers with a wool content, their intended use and design differ significantly. Trousers and breeches are typically full-length garments, whereas shorts cover a much shorter portion of the leg.

The subcategories under 6103.43.10 further delineate these distinctions. 6103.43.10.10 exclusively covers trousers and breeches, encompassing a wide range of styles and cuts for full-length legwear. In contrast, 6103.43.10.20 is reserved for shorts, which are distinct from trousers and breeches by their shorter length. This hierarchical structure ensures precise classification based on the specific type of garment.