6110.90.90.30 - Subject to man-made fiber restraints (646)

This HTS classification pertains to sweaters for women or girls that are knitted or crocheted, and are specifically composed of man-made fibers. These garments fall under the broader category of "sweaters, pullovers, sweatshirts, waistcoats (vests) and similar articles, knitted or crocheted," and more narrowly within "Of other textile materials" and "Other." The key distinguishing factor for this specific subcategory is the presence of man-made fibers, which are subject to specific trade restraints, as indicated by the code "(646)".

This classification is distinct from its siblings, 6110.90.90.26 (subject to cotton restraints) and 6110.90.90.28 (subject to wool restraints), primarily by its fiber content. While all these categories cover knitted or crocheted sweaters for women or girls within the "other textile materials" group, the specific type of fiber (man-made versus cotton or wool) dictates the applicable customs treatment and potential import limitations.

As a leaf node, this classification does not have further subcategories. Therefore, practical classification will rely on confirming that the garment in question is indeed a sweater for women or girls, is knitted or crocheted, is not predominantly of cotton or wool (placing it in the "other textile materials" basket), and is specifically made from man-made fibers that fall under the aforementioned restraints. Examples would include acrylic, polyester, nylon, or rayon sweaters intended for female wear.