6204.61 - Of wool or fine animal hair:

This HTS category, 6204.61, specifically covers women's or girls' trousers, bib and brace overalls, breeches, and shorts that are constructed from wool or fine animal hair. These garments fall under the broader classification of women's or girls' suits and separates, excluding knitted or crocheted items. The key distinguishing factor for this subheading is the primary textile material used in its manufacture.

Unlike sibling categories such as 6204.62 (of cotton), 6204.63 (of synthetic fibers), or 6204.69 (of other textile materials), the defining characteristic here is the exclusive or predominant use of wool or fine animal hair, such as cashmere, mohair, or alpaca. This material imparts specific qualities, including warmth, drape, and texture, which are crucial for customs classification.

This particular category is further subdivided to refine classification based on intended use. The subcategories include "Recreational performance outerwear," which would encompass items designed for specific athletic or outdoor activities, and "Other," which serves as a residual category for all other trousers, bib and brace overalls, breeches, and shorts made of wool or fine animal hair not otherwise specified. This bifurcated structure allows for more precise tariff application based on the garment's functional design and purpose.