6001.99 - Of other textile materials:

This HTS category, 6001.99, encompasses knitted or crocheted pile fabrics, including long pile and terry fabrics, that are not exclusively composed of cotton or man-made fibers. These fabrics are characterized by loops of yarn that are either cut or left uncut on one or both sides, creating a raised, fuzzy, or absorbent surface. Examples include certain types of velvets, plushes, and specialized toweling fabrics when manufactured using knitting or crocheting techniques.

The primary distinction for this category lies in its material composition. Unlike its sibling categories, 6001.91 (of cotton) and 6001.92 (of man-made fibers), 6001.99 applies to pile fabrics made from textile materials other than cotton or man-made fibers. This commonly includes natural fibers such as silk, wool, animal hair, or blends where these fibers are predominant and dictate the fabric's classification.

Within this category, further distinctions are made based on specific material content. Subcategory 6001.99.10.00 is designated for fabrics containing 85 percent or more by weight of silk or silk waste, reflecting the higher value and specific properties associated with silk pile fabrics. The residual category, 6001.99.90.00, captures all other pile fabrics falling under 6001.99 that do not meet the stringent silk content threshold, encompassing a broader range of materials and potential blends.