6211.11.40.00 - Containing 70 percent or more by weight of silk or silk waste (759)

This HTS classification, 6211.11.40.00, specifically designates swimwear for men and boys that is composed of 70 percent or more by weight of silk or silk waste. This category focuses on garments designed for aquatic activities, such as swimming trunks, bathing suits, and related apparel, when these items meet the stringent silk content requirement. The "759" notation indicates a specific interpretive note or statistical suffix that may provide further detail or statistical tracking for these particular goods.

It is crucial to differentiate this classification from its siblings. HTS 6211.11.10 covers swimwear of man-made fibers, whereas HTS 6211.11.80 encompasses "other" swimwear not falling into the specified material categories. Therefore, the defining characteristic of 6211.11.40.00 is its exclusive focus on high silk content, distinguishing it from swimwear made of synthetic or other natural fibers not meeting the 70% silk threshold.

As this is a leaf node within the HTS structure, there are no further subcategories. The classification is precise, and goods will either fall into this category based on their material composition and intended use as swimwear, or they will be classified under a different subheading based on differing fiber content or garment type. Classification hinges directly on verifying the silk content by weight.