6109.90.10.09 - Boys' (638)

This HTS subheading specifically classifies boys' t-shirts and similar knitted or crocheted garments crafted from man-made fibers, excluding those made from cotton, wool, or fine animal hair. These items are characterized by their casual wear nature and typically feature a distinct neck opening and short sleeves, although sleeveless variations (tank tops) are also included. The defining criterion for this category is the material composition of man-made fibers.

Distinguished from its sibling, 6109.90.10.07, this category is exclusively for boys' garments. The sibling category is designated for men's apparel, implying a differentiation based on size, cut, and potentially design elements intended for male adults rather than young males. Both categories fall under the broader classification of "Of man-made fibers" and "Men's or boys': T-shirts," highlighting their shared material and general garment type.

As this subheading represents a leaf node within the HTS structure, there are no further subdivisions. Therefore, classification within 6109.90.10.09 hinges on confirming the garment's intended wearer as a boy and its construction from man-made fibers. Importers should carefully review the fiber content and confirm the garment's sizing and style are appropriate for boys to ensure accurate classification.