6404.19.57 - With uppers of textile material other than vegetable fibers and having outer soles with textile materials having the greatest surface area in contact with the ground, but not taken into account under the terms of additional U.S. note 5 to this chapter

This HTS classification, 6404.19.57, pertains to footwear where the upper is constructed from textile materials, excluding vegetable fibers. Crucially, the outer sole must also be composed of textile materials that constitute the largest surface area in contact with the ground. However, this classification specifically excludes footwear where the outer sole's textile component is subject to the conditions outlined in Additional U.S. Note 5 to Chapter 64. This note often relates to specialized construction or materials that would place the footwear under a different heading.

Distinguishing this category from its sibling, 6404.19.52, is the material of the upper. While both share the requirement of a textile outer sole with the greatest ground contact, 6404.19.52 is reserved for footwear with uppers made of vegetable fibers. Conversely, 6404.19.57 applies to uppers made from non-vegetable textile materials, such as synthetic or man-made fibers, or other textile blends not of vegetable origin. The "Other" sibling category, 6404.19.59, would encompass footwear that meets the broader criteria of 6404.19 but does not fit the specific distinctions of 6404.19.52 or 6404.19.57.

The subcategories within 6404.19.57 further refine the classification based on the intended use of the footwear. "House slippers" represent one specific type of footwear falling under this heading, indicating an article primarily designed for indoor comfort and wear. The "Other" subcategory accommodates all remaining footwear that fits the parent description but does not qualify as house slippers, allowing for a detailed breakdown of various non-house slipper styles within this broad classification.