5509.92.00.00 - Mixed mainly or solely with cotton (607)

This HTS category, 5509.92.00.00, encompasses yarns of synthetic staple fibers that are not put up for retail sale and are not primarily of wool or fine animal hair. Specifically, it covers those yarns where the synthetic staple fibers are mixed mainly or solely with cotton, forming the predominant component of the blend. These yarns are intended for further manufacturing processes in the textile industry, rather than direct sale to consumers.

It is crucial to distinguish this category from its sibling, 5509.91.00.00, which specifically covers synthetic staple fiber yarns mixed mainly or solely with wool or fine animal hair. The key differentiating factor lies in the secondary component of the blend. While both are "other yarns" within the broader category of synthetic staple fiber yarns, the presence of cotton as the primary or sole mixing fiber places a product within 5509.92.00.00, whereas wool or fine animal hair would direct it to 5509.91.00.00.

As this is a leaf node in the HTS classification, there are no further subcategories. Therefore, classification within 5509.92.00.00 is determined by the material composition: the yarn must consist of synthetic staple fibers and be predominantly or entirely blended with cotton, and not be prepared for direct retail sale. Examples of such yarns could include those used in the production of denim, corduroy, or other cotton-rich woven fabrics where synthetic staple fibers are incorporated for enhanced durability or specific performance characteristics.