What to Put in an Underwear Supply Agreement (2026)

Quick answer. An underwear supply agreement is worth writing because of the clauses that apply when something goes wrong rather than because of the price. The specification, the amendment rule, the inspection standard, the remedy and the delay allocation are the five that decide how a problem is handled — and each is cheaper to agree before the first order than after it.

1. The five clauses that carry the weight

• The specification. Fibre, blend ratio, weight in g/m², measurements with tolerances, construction detail and the gusset lining, written into the agreement rather than left on a quotation.
• The amendment rule. Any material change requires a signed amendment, and a sub-tier change counts as material.
• The inspection standard. AQL sampling to ISO 2859-1, with the level, the limit and the defect classes named.
• The remedy. Replacement, credit or rework on a fail, each with its effect on the schedule.
• The delay allocation. What counts as a force majeure event, and what the buyer’s remedy is separately from it.

2. The commercial clauses

• Price basis and validity. The unit price, the trade term and the port, and how long the figures stand.
• The minimum basis. Per style and colour, with the trial price shown separately.
• The payment structure. Each part and its trigger, rather than a summary.
• The development and tooling position. Which items are one-time, and who owns the tooling afterwards.
• The lead-time structure. Sampling, bulk and freight separately, so a single figure cannot hide which stage has no slack.

3. The clauses that are usually left out

• Pattern ownership. Who owns the block, and what happens to it if the relationship ends.
• Sub-tier notification. Whether a change of subcontractor requires notice, and what form it takes.
• Escalation path. Who is contacted when a stage slips, and at what point it escalates.
• Termination. The conditions under which either side can end the arrangement, and the notice period.
• Dispute resolution. The forum and the governing law, agreed while the relationship is calm.
• Confidentiality. Which covers the specification, the design and the commercial terms.

4. What the agreement does not replace

• The sealed approved sample. The specification describes the garment; the sample is what the delivery is measured against.
• The inspection records. Which are the evidence a claim depends on.
• The verification of certification. Which is a check on the issuing body’s database rather than a clause.
• The operational relationship. An agreement sets the framework; the working relationship is what uses it.

5. How to negotiate the clauses

• Do the specification first. The commercial clauses apply to a garment, and the garment has to exist in writing before the rest means anything.
• Put the amendment rule early. It is the clause that prevents most disputes, and it is cheapest to agree when neither side has invested.
• Separate the one-time costs. Development and tooling sit on the first order, so mixing them into the unit price distorts both.
• Write the escalation path before an escalation. Which is when both sides can agree on something proportionate.
• Keep the agreement and the order file together. Since the clauses are only useful when the records they refer to exist.

6. Common errors

• Relying on the quotation as the agreement. A quotation states a price; the specification and the clauses state the arrangement.
• Leaving the amendment rule out. Which turns every material change into a discussion about what was agreed.
• Naming a standard without the level or the defect classes. An inspection then has nothing to be measured against.
• Assuming force majeure protects both sides equally. It generally protects the supplier, so the buyer’s remedy is written separately.
• Leaving pattern ownership unstated. Which becomes a question only when the relationship ends, which is the worst time to settle it.
• Signing without the sealed sample. The agreement describes the garment; the sample is what proves it.

7. How to compare two suppliers by their agreements

• Both with a written specification. Without one, neither agreement describes a garment.
• Both with the amendment rule stated. Including whether a sub-tier change counts.
• Both with the inspection standard complete. Level, limit and defect classes.
• Both with the remedy identified. And its effect on the schedule.
• Both with pattern ownership stated. Since that is the clause that matters at the end of a relationship rather than the beginning.

Published: 2026-10-15 · Xiamen Unitex Trade Co., Ltd. — OEM & ODM underwear sourcing partner

Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — OEM/ODM underwear sourcing and supply-chain partner in Xiamen, China; in the trade since 2009, incorporated in 2013. Based in the Xiamen–Quanzhou–Jinjiang knitwear cluster, Fujian Province, south-east China.