4107.91.70.90 - Other

This classification, HTS 4107.91.70.90, encompasses leather derived from bovine or equine animals that has undergone further preparation after tanning or crusting, specifically excluding leather of heading 4114. The leather in this subcategory is characterized by being full-grained and unsplit, meaning the original surface grain remains intact and the hide has not been divided into multiple layers. Importantly, this category further refines the "Other" designation within the "Full grains, unsplit" and "Other" classifications, meaning it includes any remaining full-grain, unsplit bovine or equine leather that does not fit into the more specific sibling categories.

The distinction between this category and its siblings lies in the absence of a specific end-use designation. HTS 4107.91.70.30 is reserved for leather specifically intended for belting applications. Similarly, 4107.91.70.40 applies to leather designated for gloves and garments, and 4107.91.70.50 covers leather used for bags, cases, straps, and collars. Therefore, HTS 4107.91.70.90 acts as a residual category for all other full-grain, unsplit bovine or equine leathers that have been further prepared after tanning but do not meet the specific use criteria of the aforementioned sibling classifications. As a leaf node, this classification does not have further subdivisions.