<h1>Customs Tariff First Schedule Section XI rules on textile classifications, exclusions, mixtures, yarn definitions and smart fabrics</h1> Section XI of the Customs Tariff First Schedule defines the scope and classification rules for textiles and textile articles (Chapters 50-63). It specifies exclusions to this Section (e.g., human hair goods, plastics, rubberized fabrics, footwear, headgear, toys, furniture, certain Chapter 96 and 97 articles). It sets priority rules for classifying mixtures of textile materials, defines when yarn is treated as twine, cordage or sewing thread, and what constitutes 'put up for retail sale,' 'high tenacity yarn,' 'elastomeric yarn,' and 'made up' articles. It clarifies treatment of woven, knitted and printed fabrics, elastic products with rubber, and smart textiles, and provides sub-heading definitions for yarn and fabric states (unbleached, bleached, dyed, printed) and application of mixed-material rules to products in Chapters 56-63.