6107.99.20.00 - Of wool or fine animal hair (459)

This HTS classification, 6107.99.20.00, pertains to men's or boys' undergarments, sleepwear, and loungewear, knitted or crocheted, that are specifically made from wool or fine animal hair. This includes items such as knitted wool or fine animal hair briefs, underpants, nightshirts, pajamas, bathrobes, and dressing gowns. The defining characteristic for this subcategory is the material composition, requiring the predominant textile material to be wool or fine animal hair.

This classification is distinguished from its sibling categories by its specific material requirement. For instance, it differs from 6107.99.10, which covers similar articles but made of man-made fibers. It also differs from 6107.99.50, which applies to articles containing 70 percent or more by weight of silk or silk waste, and from 6107.99.90.00, which serves as a residual category for other textile materials not otherwise specified. The "Of wool or fine animal hair" designation is the critical factor in determining classification under 6107.99.20.00.

As this is a leaf node, there are no further subcategories within this specific HTS code. Therefore, classification decisions for articles falling under this code will hinge entirely on verifying that the item is a men's or boys' undergarment, sleepwear, or loungewear, knitted or crocheted, and that its primary textile component is wool or fine animal hair. Examples of fine animal hair typically include cashmere, mohair, angora, alpaca, llama, and vicuña.