6406.90.30 - Of rubber or plastics

This HTS category, 6406.90.30, specifically covers parts of footwear, gaiters, leggings, and similar articles that are predominantly made of rubber or plastics. This encompasses a wide array of components used in the manufacturing or repair of footwear and related items. Examples include plastic insoles, rubberized heels, synthetic uppers attached to soles (excluding outer soles), and plastic components for gaiters.

Crucially, this category is distinguished from its siblings by its material composition. Unlike category 6406.90.15, which is designated for parts made of textile materials, or 6406.90.60.00, reserved for those made of leather, this classification focuses solely on articles where rubber or plastics form the primary constituent. It also differs from the broader "Other" category (6406.90.90.00), which would apply only if the part does not fit into the textile, leather, or rubber/plastic classifications.

Within this category, further subdivision exists to refine classification. The subcategories 6406.90.30.30 ("Bottoms") and 6406.90.30.60 ("Other") allow for a more granular identification of the specific type of rubber or plastic part. "Bottoms" would typically refer to the lower structural components of footwear, such as soles or midsoles made of rubber or plastic, while "Other" would encompass all remaining rubber or plastic parts not otherwise specified, such as straps, closures, or decorative elements.