6110.30.30.30 - Men's or boys' (659)

This HTS classification, 6110.30.30.30, specifically covers knitted or crocheted vests for men and boys that are not sweater vests. These garments are designed to be worn over other clothing, providing warmth or style, and are distinguished by their sleeveless nature and lack of a full frontal opening and closure characteristic of sweaters. The "other" designations at the preceding levels indicate that these vests are not specifically enumerated under more detailed subheadings within the broader category of "sweaters, pullovers, sweatshirts, waistcoats (vests) and similar articles, knitted or crocheted," and are not made of the specific man-made fibers or in the specific constructions that would place them in other subcategories.

The primary distinction of this category lies in its focus on vests and its exclusion of "sweater vests," which typically have a knit construction similar to sweaters but function as vests. It also differentiates from its sibling category, 6110.30.30.35, by exclusively covering apparel for the male gender, whereas the sibling encompasses apparel for females.

As this is a leaf node, there are no further subcategories. Therefore, classification within 6110.30.30.30 is based on confirming the item is a knitted or crocheted vest for men or boys, is not a sweater vest, and is composed of man-made fibers, after all other more specific classifications have been ruled out. Practical classification criteria would include the garment's construction, the materials used, and its intended wearer.