6107.91.00.30 - Sleepwear (351)

This HTS classification, 6107.91.00.30, specifically covers men's or boys' sleepwear that is knitted or crocheted and made of cotton. The "sleepwear" designation within this subcategory encompasses garments primarily intended for wear during sleep, such as pajamas, nightshirts, and similar items. The crucial elements for classification here are the knitted or crocheted construction and the material composition of cotton.

While the parent category includes a broad range of men's or boys' undergarments and similar articles, this specific code zeroes in on sleepwear. At the same hierarchical level, there might be other subcategories such as those for garments made from other specific fibers or for different types of articles (e.g., underpants, bathrobes). The distinction lies in the intended use (sleepwear) and the material (cotton).

As this is a leaf node, there are no further subcategories. Therefore, classification at this level relies on the precise identification of the garment as men's or boys' sleepwear, knitted or crocheted, and confirmed to be of cotton. Practical classification considerations would involve examining labels for material content and observing the design and purpose of the garment to ensure it aligns with the definition of sleepwear.