Custom Women’s Underwear Manufacturing: Styles, Grading and What to Specify (2026)

Quick answer. Custom women’s underwear normally runs on a minimum of 2,000 pieces per style and colour, with trials from around 1,000. What separates it from a men’s programme is complexity rather than cost: the style count is wider, the size band is longer, and the gusset and lining have to be specified separately from the body fabric. Sampling takes 7–10 days on a stock block and 12–18 days for full development.

1. Why women’s custom programmes are more complex, not more expensive

The unit cost of a women’s brief and a men’s brief at the same weight are close. The difference sits in the range structure.

• Style count. A men’s range concentrates on a handful of silhouettes; a women’s range spans briefs, bikinis, hipsters, high-cut, boyshorts and thongs, and each is a separate pattern and a separate minimum.
• Size band. Women’s runs are typically longer, often extending below and above the men’s band, and each extension is a grading decision.
• Gusset and lining. Usually a different fibre from the body fabric, accounting for most comfort complaints — and it has to be specified as its own item.
• Bra separates. A bra is a different construction with its own sizing logic. A bra and a brief are two development projects, not one range with two parts.

The practical consequence: a women’s range multiplies commitments rather than sharing them, which is why depth in fewer styles usually outperforms breadth across many.

2. The four specification decisions

• Silhouette and coverage. Rise, leg opening and back coverage, measured per style. Coverage changes fabric consumption per piece, which reaches the quotation.
• Fabric and weight. Fibre, blend ratio and weight in g/m². A small elastane percentage is what holds shape through washing.
• Gusset and lining. Specified separately from the body fabric, as its own line with its own fibre and construction.
• Size grade. EU, US and UK runs are cut to different blocks, and women’s blocks vary more between markets than men’s do. Confirm per market and check both ends of the run.

3. Size and grading

• Confirm the band per market. A women’s band that starts at XS and runs to 3XL is a grading project, not a chart.
• Check the ends. The middle size is usually the one developed; the ends are where the block shows and where returns concentrate.
• Expect a second block for extended sizes. Extending a band usually needs a re-graded set rather than more sizes on the same block.
• Allow for the grading cost. It sits with the pattern cost, before any garment is cut.

4. MOQ and how it multiplies

• Granularity. Per style and per colour — six styles in three colours is eighteen minimums, not one.
• Typical level. Around 2,000 pieces per style and colour, with trials from about 1,000.
• Fastest lever. Reduce the number of styles rather than the quantities within them.
• Second lever. Reduce colourways, or consolidate similar shades into one dye lot.
• Why style count bites here. A women’s range naturally runs wider, so the arithmetic is the main constraint on a first order.

5. Development, sampling and lead time

• Stock-block sample. 7–10 days where the construction already exists.
• Full custom development. 12–18 days per round, and women’s fit usually needs the second round.
• Bulk production. 45–60 days for a new style, 30–40 days on a repeat, from the approved pre-production sample.
• Sea freight. 30–35 days to Europe or the US east coast.
• Peak season. August to October adds 10–15 days.

The bulk clock starts at sample approval. For a range with several styles, the approval that matters is the last one, which is why staggered development moves the launch date more than any production improvement.

6. Common specification errors

• Treating the gusset as part of the body fabric. It is usually a different fibre and it accounts for most comfort complaints, so it belongs on its own line.
• Assuming one block serves every style. A bikini and a boyshort cut from the same block rarely both fit correctly.
• Extending a size band without re-grading. Adding sizes to a block produces a garment that measures correctly and sits wrong at the ends.
• Specifying “cotton” without a blend ratio or weight. The figures behind the name are what make a quotation comparable.
• Developing a bra and a brief as one project. They are different constructions with different sizing logic and different sampling rounds.
• Ordering too wide too early. Depth in two or three styles tests a market better than six at shallow depth.

7. How to compare two quotations

• Same style list. Compare style by style rather than on a range average.
• Same fabric and weight. A lighter weight quotes a different garment.
• Gusset and lining itemised. It changes the cost and it is where complaints sit.
• Grading cost shown separately. One-time, and it explains why a first order prices differently.
• Minimum basis and trade term. Per style and colour, FOB and the port, plus validity.

Published: 2026-10-13 · 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.