6205.90.10.00 - Containing 70 percent or more by weight of silk or silk waste (740)

This HTS classification covers men's or boys' shirts that are not knitted or crocheted and are primarily constructed from textile materials other than those specified in prior subheadings. Specifically, this category, 6205.90.10, applies to shirts where the fabric composition is at least 70 percent by weight of silk or silk waste. This material composition is the defining characteristic for goods falling under this particular tariff code.

The primary distinction for this category lies in its material composition. It is differentiated from its sibling category, 6205.90.30, which is designated for "Other" men's or boys' shirts of textile materials not meeting the silk or silk waste criteria. Therefore, if a shirt is made predominantly of materials other than silk or silk waste (e.g., cotton, linen, synthetic fibers, or a blend where silk is less than 70% by weight), it would likely be classified under the "Other" subheading.

As this is a leaf node within the HTS classification structure, there are no further subcategories to introduce. Classification under 6205.90.10.00 is final for men's or boys' shirts meeting the specific silk content requirement and not being knitted or crocheted. Importers should carefully verify the material composition of their shirts to ensure accurate classification, relying on textile content declarations and, if necessary, laboratory analysis to confirm the silk percentage.