6207.21.00 - Of cotton

This HTS category, 6207.21.00, specifically classifies nightshirts and pajamas for men and boys that are constructed from cotton. This includes a wide range of sleepwear and loungewear designed for sleeping or relaxing at home, such as traditional pajama sets (tops and bottoms), as well as separate nightshirts. The defining characteristic for this classification is the primary textile material used in their manufacture.

It is crucial to distinguish this category from its siblings. HTS 6207.22.00 covers similar articles made from man-made fibers, while 6207.29 encompasses those made from other textile materials not specified elsewhere. Therefore, the classification hinges on accurately identifying the fiber content of the garment. If a garment is primarily cotton, it falls under this code; if it's primarily polyester or nylon, it would be classified under 6207.22.00.

The subcategories further refine the classification within "Of other textile materials" for 6207.29. While this current node, 6207.21.00, is a leaf node, understanding the broader structure of Chapter 62 highlights the importance of material composition and construction in determining the correct tariff classification for apparel. The parent context establishes the broad scope of men's or boys' undergarments and similar articles, with this specific code narrowing it down to cotton sleepwear.