U.S. imports of men's & boys' knit swimwear of synthetic fibers (HS 611231) totaled $1.3M in August 2026, imported from 56 countries.
Importers of Men's & Boys' Knit Swimwear of Synthetic Fibers paid $428K in duties in August 2026, an effective tariff rate of 32.46% of the $1.3M imported — duty actually collected as a share of that value, not the published tariff schedule. Men's & Boys' Knit Swimwear of Synthetic Fibers imports of $1.3M in August 2026 ran 23% below the year-to-date monthly average of $1.7M.
Last updated: August 2026 dataImports from China dominate this heading, with Sri Lanka and Vietnam also significant suppliers of knit or crocheted swimwear constructed from synthetic fibers such as nylon or polyester. The US schedule breaks the heading into two 10-digit lines — men's (6112310010) and boys' (6112310020) — with classification turning on the garment's intended wearer size. Goods from China are subject to Section 301 tariffs, making origin diversification toward Sri Lanka and Vietnam a common sourcing strategy for US importers. Elastane content and fiber blend percentages are key specification details that customs examiners may scrutinize at entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
421 shipments/mo
Classification between 6112310010 (men's) and 6112310020 (boys') generally follows the size range of the garment as labeled and marketed — boys' sizes typically correspond to children's sizing conventions, while men's covers adult sizing. Importers should ensure commercial invoices and packing lists clearly state the intended size range to avoid reclassification.
Yes. Knit swimwear of synthetic fibers originating in China is subject to Section 301 tariffs in addition to the standard column 1 duty rate. Importers sourcing from Vietnam or Sri Lanka — the next-largest suppliers — are not subject to Section 301, which has driven notable supply-chain shifts in this category.
HSChapter 61
Subheading 3 of 8 in heading 6112
Subheading 611231 · $1.3M of $19.2M
ImportsExports
Imports
$1.3MYoY · free account
Exports
$62KYoY · free account
12-mo low · imports
YoY · free accountOver the twelve months to August 2026, the U.S. imported $17.4M of Men's & Boys' Knit Swimwear of Synthetic Fibers.
Through August 2026. Source: U.S. Census Bureau.
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 6112310010 | Men's Swimwear of Synthetic Fibers, Knit | $1.2M | 31.70% | 97.71% | $367K |
| 6112310020 | Boys' Swimwear of Synthetic Fibers, Knit | $162K | 37.91% | 100.00% | $62K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 6112310000 | Men's or Boys' Swimwear of Synthetic Fibers, Knitt | $62K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · August 2026
origin
Cambodia and Slovakia together supply 43% of it. China pays 45.8% duty; Slovakia 25.9%.
customs district
destination
entry
rate provision · imports
2.0% enters free of duty; duty collected equals 32.46% of total import value.