Here is the comprehensive, Wiki-style guide for the classification and tariff analysis of "Boys' Simple Underwear" (男孩简约内裤), based strictly on the provided data.

🩲 Boys' Simple Underwear: Global HS Code & Tariff Strategy Guide (2026 Edition)

🌐 Comprehensive Customs Clearance & Duty Analysis | High-Volume Import Strategy

🚨 Executive Summary:
"Boys' Simple Underwear" is a high-volume textile category with extreme sensitivity to material composition (Knitted vs. Woven) and manufacturing fiber content (Cotton vs. Synthetic).
Crucial Warning: The tariff rate fluctuates wildly from 20.5% to 34.0% based on a single character difference (Knitted vs. Woven) or fiber type. A misclassification can lead to massive cost overruns and customs delays.

📦 1. Product Definition & Material Classification

In international trade, "Simple Underwear" is not a single category. It is split by construction method and fiber content:

⚠️ Critical Classification Rule:
- Knitted Cotton = High Tariff (Due to USITC + China Add-on).
- Knitted Synthetic = High Tariff (Highest rate in this list).
- Woven Synthetic = Not Listed (Must check other codes); Only Woven Cotton is listed here.
- Tank Top Style = Highest Tariff (34.0%).

🏷️ 2. HS Code Classification Matrix (Strict Data Analysis)

Below is the exact breakdown based on your provided data. Each code corresponds to a specific material combination.

📌 Note on "Simple" (简约): In customs terms, this implies standard cut, no complex embroidery, no branding tags exceeding limits, and standard packaging.

💰 3. Detailed Tariff Breakdown (The "Why" & "How")

All products listed below are subject to the Section 301 (232/Section 122) structure currently applicable to Chinese imports.

📌 1. Knitted Cotton Underwear (Code: 6107.11.00.20)

• Target: Boys' Cotton Briefs/Boxers (Knitted).
• Rate: 24.9%
• Structure:
  • Base Duty (MFN): 7.4%
  • Section 301 Add-on: 7.5% (General Section 301 tariff)
  • Section 122 (Tariff 122): 10.0%
• Formula: 7.4 + 7.5 + 10.0 = 24.9%
• Risk: High volume category; customs often spot-check fiber content. If the "Cotton" claim is false, penalty applies.

📌 2. Woven "Other Material" Underwear (Code: 6207.19.90.30)

• Target: Boys' Underwear made of Nylon, Polyester, or Blends (Woven/Non-Knitted).
• Rate: 20.5% (The Lowest Rate in this list!)
• Structure:
  • Base Duty: 10.5%
  • Section 301 Add-on: 0.0% (Exempt from the 7.5% surcharge in this specific subheading)
  • Section 122: 10.0%
• Formula: 10.5 + 0.0 + 10.0 = 20.5%
• Strategy: If the product can be legally classified as "Woven/Other Material" rather than "Knitted Synthetic," this is the most cost-effective route.

📌 3. Woven Cotton Underwear (Code: 6207.11.00.00)

• Target: Boys' Cotton Boxers/Briefs (Woven/Structured).
• Rate: 23.6%
• Structure:
  • Base Duty: 6.1%
  • Section 301 Add-on: 7.5%
  • Section 122: 10.0%
• Formula: 6.61 + 7.5 + 10.0 = 23.6%
• Note: Lower base duty than knitted cotton, but the Section 301 add-on applies, keeping the total high.

📌 4. Knitted Synthetic/Man-Made Underwear (Code: 6107.12.00.20)

• Target: Boys' Underwear made of Polyester, Rayon, or Nylon (Knitted).
• Rate: 32.4%
• Structure:
  • Base Duty: 14.9% (High base rate for synthetics)
  • Section 301 Add-on: 7.5%
  • Section 122: 10.0%
• Formula: 14.9 + 7.5 + 10.0 = 32.4%
• Warning: Avoid "100% Synthetic" if possible; the base duty is significantly higher than cotton.

📌 5. Knitted "Tank Top" Style Underwear (Code: 6109.10.00.07)

• Target: Boys' undershirts/tank tops used as underwear.
• Rate: 34.0% (The Highest Rate)
• Structure:
  • Base Duty: 16.5% (Highest base rate)
  • Section 301 Add-on: 7.5%
  • Section 122: 10.0%
• Formula: 16.5 + 7.5 + 10.0 = 34.0%
• Critical: If the garment is sleeveless but covers the torso like a "T-shirt" but has no legs, it MUST be classified here. Do not try to force it into "Underwear" codes; it will be rejected.

🛠️ 4. Customs Clearance Strategy & Recommendations

✅ Step 1: Verify Material Composition (The "Fiber Test")

Before shipping, you must have a third-party lab report confirming the fiber percentage. * Scenario A: Label says "100% Cotton". * If Knitted → Use 6107.11.00.20 (24.9%). * If Woven → Use 6207.11.00.00 (23.6%). * Scenario B: Label says "100% Polyester". * If Knitted → Use 6107.12.00.20 (32.4%). * Scenario C: Label says "Cotton/Poly Blend" or "Other". * If Woven → Try to qualify for 6207.19.90.30 (20.5%) to save 3-5% in duties.

✅ Step 2: Define the "Style" Accurately

• Underwear vs. Tank Top:
  • If the item has no legs but is worn as a base layer, it is a Tank Top (6109.10.00.07).
  • Do not declare a tank top as "Underwear" to avoid the higher tax; this is fraud.
  • Do not declare "Underwear" that has a tank-top cut as "Underwear" if it falls under 6109; expect a re-classification and penalty.

✅ Step 3: Prepare Documentation

To clear customs smoothly under these complex tariffs: 1. Composition Certificate: Explicitly state "Cotton," "Synthetic," or "Blend." 2. Construction Method: Explicitly state "Knitted" (针织) or "Woven" (梭织). 3. Section 122 Declaration: Be prepared for the automatic 10% Section 122 tariff application. 4. Section 301 Declaration: Acknowledge the 7.5% surcharge.

⚠️ 5. Common Pitfalls (Avoid These!)

🌍 6. Quick Comparison: Cost Impact on $100,000 Shipment

💡 Pro Tip: If you have the flexibility to switch manufacturing processes, producing "Woven / Other Material" underwear saves you 13.5% in total duties compared to the standard Knitted Tank Top.

🚀 Final Checklist for Shippers

1. [ ] Confirm Fiber: Is it 100% Cotton, Synthetic, or Blend?
2. [ ] Confirm Weave: Is it Knitted (Stretchy) or Woven (Structured)?
3. [ ] Confirm Style: Does it have legs (Underwear) or is it a Vest (Tank Top)?
4. [ ] Calculate Duty: Apply Base + 7.5% + 10% based on the table above.
5. [ ] Labeling: Ensure the "Country of Origin" is clearly marked as China (CN) to trigger the correct Section 301/122 rates accurately.

Disclaimer: Tariff rates are subject to change based on US Trade Representative (USTR) announcements. Always verify with a licensed customs broker before shipment.