6109.90.80 - Other

This HTS category, 6109.90.80, "Other," within the broader classification of knitted or crocheted T-shirts, singlets, tank tops, and similar garments, serves as a residual category for items not specifically provided for in preceding subheadings. It encompasses garments of this type that are made from textile materials other than those explicitly detailed in sibling categories such as man-made fibers (6109.90.10), wool with long sleeves (6109.90.15), or those predominantly composed of silk or silk waste (6109.90.40). Therefore, this category is for garments where the primary textile material does not fall into the specific classifications of the other "Of other textile materials" subheadings under 6109.90.

The presence of subcategories, such as 6109.90.80.10 for men's or boys' garments and further subdivisions for women's or girls' garments, indicates that further classification within this residual "Other" category is based on the intended gender of the wearer. This subdivision allows for more granular tracking and tariff application based on demographic distinctions for garments that do not fit into more material-specific sibling classifications. The criteria for distinguishing these subcategories will primarily revolve around the design, cut, and sizing characteristic of men's, boys', women's, or girls' apparel.