6405.90 - Other:

Category 6405.90 encompasses "Other" footwear not specifically classified in preceding headings. This broad category serves as a residual classification for footwear that does not fit into the more defined categories within Chapter 64. The primary determining factor for inclusion here is the absence of specific material or construction criteria that would place the item in other headings.

This heading distinguishes itself from its siblings, 6405.10.00 (footwear with uppers of leather or composition leather) and 6405.20 (footwear with uppers of textile materials), by its residual nature. Unlike those categories, which are defined by the material of the upper, 6405.90 is for footwear where the upper is not primarily leather, composition leather, or textile material as defined in those other headings. This often includes footwear made from a combination of materials where no single material clearly dominates for classification purposes, or footwear constructed from materials like rubber, plastics, or metal, provided they are not specifically addressed elsewhere.

Within this residual category, subcategories further refine the classification. 6405.90.20.00 is designated for disposable footwear, specifically designed for single or limited use, such as that found in medical facilities or for promotional events. The remaining footwear that does not meet the criteria for disposable footwear will fall under the residual subcategory 6405.90.90, which serves as a further catch-all for any remaining "other" footwear not otherwise classified.