6110.90.10.50 - Men's or boys' (738)

This HTS category, 6110.90.10.50, specifically classifies men's or boys' knitted or crocheted sweaters, pullovers, sweatshirts, waistcoats (vests), and similar articles. These garments are distinguished by their construction from "other textile materials" and, critically, must contain 70 percent or more by weight of silk or silk waste. This material composition is the primary determinant for inclusion within this specific code.

The distinction from sibling category 6110.90.10.60 lies solely in the intended wearer: this code is for garments designed for men or boys, whereas the sibling code pertains to women's or girls' garments. Both categories fall under the broader heading of knitted or crocheted articles of other textile materials containing a high percentage of silk.

As this is a leaf node in the HTS structure, there are no further subcategories to introduce. Classification under 6110.90.10.50 is thus dependent on fulfilling the material composition requirement (70% or more silk/silk waste) and the intended wearer (men's or boys'). Examples of items that would fall here include men's silk V-neck sweaters, boys' silk crew-neck pullovers, or men's silk blend vests, provided the silk content meets the specified threshold.