6106.20 - Of man-made fibers:

This HTS category, 6106.20, specifically encompasses women's or girls' blouses and shirts that are knitted or crocheted and are predominantly made of man-made fibers. This means garments designed for upper body wear, featuring knitted or crocheted construction, and composed of synthetic or artificial fibers. The key differentiator for this subcategory is its material composition, which is explicitly man-made fibers, as opposed to other textile materials.

Distinguishing this category from its siblings is crucial for accurate classification. For instance, HTS code 6106.10.00 covers similar garments but exclusively those made of cotton. The sibling category 6106.90, "Of other textile materials," serves as a broader grouping for knitted or crocheted blouses and shirts made from materials not falling under cotton or man-made fibers, such as silk, linen, or vegetable fibers other than cotton. Therefore, 6106.20 serves as a specific designation for the man-made fiber segment within the broader classification of women's or girls' knitted or crocheted blouses and shirts.

Within the 6106.20 category, further subdivisions exist to refine classification based on specific material content. Subcategory 6106.20.10 distinguishes items that contain 23 percent or more by weight of wool or fine animal hair, even though the primary material may be man-made. The residual classification falls under 6106.20.20, "Other," for garments that are of man-made fibers but do not meet the specific wool or fine animal hair percentage criteria outlined in the preceding subcategory. This hierarchical structure ensures precise tariff application based on the precise fiber composition of the garment.