5515.13.05 - Containing 36 percent or more by weight of wool or fine animal hair

This HTS classification, 5515.13.05, specifically covers woven fabrics composed predominantly of synthetic staple fibers, where polyester staple fibers are the primary synthetic component. The defining characteristic of this category is the presence of 36 percent or more by weight of wool or fine animal hair, creating a blend with the polyester staple fibers. These fabrics are designed to leverage the properties of both materials, often offering enhanced durability and texture compared to pure synthetic fabrics, while incorporating the softness and insulating qualities of wool or fine animal hair.

Distinguishing this category from its sibling, 5515.13.10 ("Other"), is crucial for accurate classification. While both fall under "Other woven fabrics of polyester staple fibers," the 5515.13.05 category is strictly for those fabrics that meet the specified minimum content of wool or fine animal hair. Fabrics classified under 5515.13.10 would therefore be woven fabrics of polyester staple fibers that do *not* contain 36 percent or more by weight of wool or fine animal hair, or are composed of other synthetic staple fibers not primarily polyester.

Within this classification, further distinctions are made based on the processing of the wool or fine animal hair component. The subcategories 5515.13.05.10 ("Not combed") and 5515.13.05.20 ("Combed") differentiate fabrics based on whether the wool or fine animal hair fibers were subjected to a combing process prior to being woven. Combing typically results in longer, parallel fibers, leading to a smoother, finer yarn and a more refined fabric, which is the key differentiator between these two subcategories.