6110.90.10 - Containing 70 percent or more by weight of silk or silk waste

This HTS subheading, 6110.90.10, specifically classifies knitted or crocheted sweaters, pullovers, sweatshirts, waistcoats (vests), and similar articles that are predominantly composed of silk. To fall under this classification, the article must contain 70 percent or more by weight of silk or silk waste. This material requirement is the primary determinant for goods entering this category, ensuring that articles primarily made of other textile materials are directed elsewhere.

Distinguishing this sub-subheading from its sibling, 6110.90.90 (Other), is crucial for accurate classification. While 6110.90.90 covers knitted or crocheted articles of other textile materials not meeting the specific silk content requirement, 6110.90.10 is reserved for those where silk is the dominant component by weight. This focus on material composition ensures that high-value silk garments are appropriately categorized.

Within this category, further distinctions are made at the next level of detail to specify product types. The subcategories, such as "Sweaters," "Vests, other than sweater vests," and "Other," allow for more granular classification based on the specific garment style. This hierarchical structure aids in applying specific tariff rates and trade regulations to the diverse range of knitted and crocheted apparel that may meet the silk content criteria.