6207.29.10.00 - Containing 70 percent or more by weight of silk or silk waste (751)

This HTS subcategory, 6207.29.10.00, specifically covers men's or boys' nightshirts and pajamas that are predominantly composed of silk or silk waste. To qualify for this classification, the articles must contain 70 percent or more by weight of silk or silk waste, as indicated by the additional U.S. note (751). These garments are designed for sleeping or lounging and fall under the broader category of men's or boys' underwear and similar articles, but are distinguished by their material composition and intended use for overnight wear.

This classification is distinct from its sibling category, 6207.29.90, which encompasses men's or boys' nightshirts and pajamas made of "other textile materials" that do not meet the specific silk content threshold. Therefore, a key differentiator is the primary fiber content: this subcategory is exclusively for silk-rich items, while the sibling category includes items made from a variety of other fibers, such as cotton, synthetic, or artificial fibers, as long as they are not predominantly silk.

As a leaf node in the HTS database, 6207.29.10.00 represents a specific classification with no further subdivisions. Classification within this code is determined solely by the predominant material composition (70% or more silk or silk waste) and the garment's function as a nightshirt or pajama for men or boys. Exporters and importers should ensure accurate declarations of material content to facilitate correct customs processing.