Removable insoles, heel cushions, gaiters, leggings, and structural footwear components occupy this heading, which serves both the aftermarket comfort-products industry and footwear manufacturers sourcing components separately from finished goods. Classification hinges on whether an article is a removable accessory versus a permanently attached part, a distinction that affects both the applicable duty rate and country-of-origin rules for finished footwear. Gaiters and leggings are included here rather than in apparel headings, making this a common source of classification disputes for multi-component shipments.

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