5801.90 - Of other textile materials:

This HTS category, 5801.90, encompasses woven pile fabrics and chenille fabrics that are not of wool, fine animal hair, or cotton. Unlike its sibling categories, which specifically address these materials, 5801.90 is reserved for fabrics manufactured using "other textile materials." This includes, but is not limited to, fabrics made from synthetic fibers like polyester or nylon, regenerated cellulosic fibers such as rayon or viscose, and other vegetable fibers excluding cotton. The defining characteristic remains the "woven pile" or "chenille" construction, meaning the fabric has loops of yarn that are either cut to form a pile or cut and twisted to create a fuzzy effect.

The distinction between 5801.90 and the sibling categories is primarily based on the fiber content of the fabric. If a woven pile or chenille fabric is predominantly composed of wool or fine animal hair, it falls under 5801.10. Similarly, if it is made of cotton, it would be classified under the cotton subcategory. Heading 5801.90 serves as a catch-all for woven pile and chenille fabrics that do not fit into these more specific material-based classifications.

Within 5801.90, further subdivisions exist to provide more granular classification. The subcategory 5801.90.10.00 specifically covers fabrics made from vegetable fibers, provided they are not cotton. This allows for the separate classification of materials like linen or jute chenille fabrics. The remaining items within 5801.90 fall under the "Other" designation, 5801.90.20, encompassing all other woven pile and chenille fabrics not otherwise specified, primarily those made from man-made fibers.