6108.99 - Of other textile materials:

This HTS category, 6108.99, encompasses "other textile materials" falling under women's or girls' slips, petticoats, briefs, panties, night dresses, pajamas, negligees, bathrobes, dressing gowns, and similar articles, all of which are knitted or crocheted. The "other textile materials" designation signifies items not exclusively made of cotton or man-made fibers, which are classified under sibling categories.

This category serves as a residual classification for knitted or crocheted sleepwear and loungewear that does not meet the specific material requirements of 6108.91 (cotton) or 6108.92 (man-made fibers). It captures articles where the primary textile component is neither cotton nor synthetic/artificial fibers, necessitating further subdivision to precisely identify the material composition for accurate tariff assessment.

To ensure granular classification, 6108.99 is further divided into subcategories based on specific textile content. This includes articles made of wool or fine animal hair (6108.99.20.00), as well as those predominantly comprising silk or silk waste (6108.99.50). The residual "other" subcategory (6108.99.90.00) captures all remaining knitted or crocheted articles within this group that do not fall into the preceding specific material classifications.