6103.29.20.64 - Containing 70 percent or more by weight of silk or silk waste (745)

This HTS category specifically classifies knitted or crocheted ensembles designed for men or boys, where the principal textile material, comprising 70 percent or more by weight, is silk or silk waste. These ensembles are distinct from individual garments like suit-type jackets or trousers, and their classification hinges on the predominance of silk content.

Within the broader category of "Ensembles: Of other textile materials: Other," this node is further refined by its specific material composition and the fact that it is knitted or crocheted, distinguishing it from woven ensembles or those made from different primary fibers. The requirement for 70% or more silk content is a critical determinant for inclusion here, overriding other textile components.

As this is a leaf node, there are no further subcategories. Therefore, the classification concludes with this detailed description, meaning any knitted or crocheted men's or boys' ensemble that meets the 70% silk or silk waste threshold and is not classifiable under a more specific heading within Chapter 61 falls under HTS Code 6103.29.20.64. Examples could include silk knit suit sets, or coordinated knit tops and bottoms where silk is the overwhelmingly dominant fiber.