# HS code 6112.31: Men's or boys' swimwear, of synthetic fibres

> HS code 6112.31 covers men's or boys' swimwear, of synthetic fibres. It sits in heading 61.12 (track suits, ski suits and swimwear, knitted or crocheted) in chapter 61 (articles of apparel and clothing accessories, knitted or crocheted). Other goods of heading 61.12 are classified under 6112.11 (tracksuits, of cotton), 6112.12 (tracksuits, of synthetic fibres), 6112.19 (tracksuits, of other textile materials), 6112.20 (ski suits) or 3 others. National tariff lines under 6112.31 are live on border.bot for the United States (2 lines, also used by 1 other country).

Source: https://border.bot/hs-codes/611231
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 61](https://border.bot/hs-codes/61) / [61.12](https://border.bot/hs-codes/6112) / [6112.31](https://border.bot/hs-codes/611231)

## Key facts

- HS code: 6112.31
- Covers: Men's or boys' swimwear, of synthetic fibres
- Heading: [61.12: Track suits, ski suits and swimwear, knitted or crocheted](https://border.bot/hs-codes/6112)
- Chapter: [61: Articles of apparel and clothing accessories, knitted or crocheted](https://border.bot/hs-codes/61)
- Edition: HS2022
- Duty in the United States: [See its 2 lines](https://border.bot/countries/united-states/hs-codes/611231)

## What this code covers

HS code 6112.31 covers men's or boys' swimwear, of synthetic fibres.

The legal text of the subheading is “Men's or boys' swimwear: Of synthetic fibres”, read under “Men's or boys' swimwear”, in HS2022.

## What it doesn’t cover

Other goods of heading 61.12 are classified under 6112.11 (tracksuits, of cotton), 6112.12 (tracksuits, of synthetic fibres), 6112.19 (tracksuits, of other textile materials), 6112.20 (ski suits) or 3 others.

- [6112.11](https://border.bot/hs-codes/611211) Tracksuits: Of cotton
- [6112.12](https://border.bot/hs-codes/611212) Tracksuits: Of synthetic fibres
- [6112.19](https://border.bot/hs-codes/611219) Tracksuits: Of other textile materials
- [6112.20](https://border.bot/hs-codes/611220) Ski suits
- [6112.39](https://border.bot/hs-codes/611239) Men's or boys' swimwear: Of other textile materials
- [6112.41](https://border.bot/hs-codes/611241) Women's or girls' swimwear: Of synthetic fibres
- [6112.49](https://border.bot/hs-codes/611249) Women's or girls' swimwear: Of other textile materials

## How it is structured

6112.31 is a six-digit subheading. Its first two digits, 61, are the chapter; the first four, 6112, are heading 61.12; the last two, 31, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 61: Articles of apparel and clothing accessories, knitted or crocheted
- Heading 61.12: Track suits, ski suits and swimwear, knitted or crocheted
- Within the heading: Men's or boys' swimwear
- Subheading 6112.31: Of synthetic fibres

## In other countries

National tariff lines under 6112.31 are live on border.bot for the United States (2 lines, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/611231): 2 lines, used by 1 other country

- Previous subheading: [6112.20](https://border.bot/hs-codes/611220) Ski suits
- Next subheading: [6112.39](https://border.bot/hs-codes/611239) Men's or boys' swimwear: Of other textile materials

## Frequently asked questions

### What does HS code 6112.31 cover?

HS code 6112.31 covers men's or boys' swimwear, of synthetic fibres.

### Which heading and chapter is HS code 6112.31 in?

HS code 6112.31 is in heading 61.12 (track suits, ski suits and swimwear, knitted or crocheted) in chapter 61 (articles of apparel and clothing accessories, knitted or crocheted).

### Where are goods of heading 61.12 classified when 6112.31 doesn’t fit?

Other goods of heading 61.12 are classified under 6112.11 (tracksuits, of cotton), 6112.12 (tracksuits, of synthetic fibres), 6112.19 (tracksuits, of other textile materials), 6112.20 (ski suits) or 3 others.

### Which countries’ tariffs list national lines under HS code 6112.31?

National tariff lines under 6112.31 are live on border.bot for the United States (2 lines, also used by 1 other country).

## Sources and updates

The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.

This page was last updated on 11 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Machine-readable: https://border.bot/hs-codes/611231.json