6112.31.00 - Of synthetic fibers

This HTS category, 6112.31.00, specifically classifies men's or boys' swimwear that is knitted or crocheted and is made from synthetic fibers. This includes items such as swim trunks, briefs, and tankinis designed for aquatic activities when these garments are constructed using materials like polyester, nylon, spandex, or other synthetic textiles. The key defining characteristics are the knitted or crocheted construction and the primary fiber content being synthetic.

This subcategory distinguishes itself from its sibling, 6112.39.00, by the material composition. While 6112.31.00 is exclusively for swimwear of synthetic fibers, 6112.39.00 would cover swimwear made from other textile materials, such as cotton, wool, or blends where synthetic fibers are not the predominant component. Therefore, the precise identification of the fiber content is crucial for accurate classification.

The subcategories under 6112.31.00 further refine the classification based on the intended wearer. The subdivisions for "Men's" (6112.31.00.10) and "Boys'" (6112.31.00.20) allow for specific statistical tracking and potential duty rate differentiation, if applicable, based on the size and intended demographic of the swimwear. This granular breakdown aids in import/export record-keeping and analysis.