6101.90.05.00 - Of wool or fine animal hair (434)

This HTS classification, 6101.90.05.00, specifically covers men's or boys' outer garments, such as overcoats, carcoats, capes, cloaks, anoraks (including ski-jackets), windbreakers, and similar articles, knitted or crocheted, that are *not* of heading 6103. The defining characteristic of this subcategory is that these articles are made "Of wool or fine animal hair". This designation refers to the primary textile fiber content by weight of the garment.

This category is distinguished from its sibling, 6101.90.10.00, by its material composition. While 6101.90.10.00 applies to garments containing 70 percent or more by weight of silk or silk waste, 6101.90.05.00 is for those primarily composed of wool or other fine animal hair, such as cashmere, mohair, or alpaca. The other sibling, 6101.90.90, serves as a residual category for any "other" textile materials not specifically defined in the preceding subcategories.

As this is a leaf node within the HTS structure, there are no further subcategories. Therefore, the classification of goods under 6101.90.05.00 hinges directly on whether the knitted or crocheted outer garment meets the criteria of being primarily made of wool or fine animal hair, and is not classified under heading 6103. Practical classification will involve verifying the fiber content through testing or documentation provided by the manufacturer.