Woven-fabric underpants and briefs for men and boys occupy a distinct classification from their knitted counterparts, a distinction that directly affects applicable duty rates and quota treatment under US textile trade agreements. The fiber content and fabric construction—whether cotton, synthetic, or a blend—drive further HTS breakouts at the 10-digit level and can trigger Section 301 exposure depending on origin. Importers sourcing from major apparel-producing countries should confirm fabric composition documentation before entry, as misclassification between woven and knit constructions is a frequent CBP audit trigger.

AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.