When a trouser label grows beyond what one workroom can sew, it works with a manufacturer: a factory or production unit that makes trousers in quantity. A good manufacturer turns your pattern into hundreds of trousers that all fit the same. A poor match wastes cloth, money and months. This lesson explains how the process works and the checks that experienced founders use.

A production timeline from tech pack, proto sample, fit samples, size set, pre-production sample, bulk, inline checks and final inspection to delivery, laid out in two rows so it reads on a phone, with a loop arrow between the fit samples
From tech pack to delivery, with the fit-sample loop.

What you’ll learn

  • The documents a manufacturer needs: the tech pack.
  • The stages of samples, from first proto to pre-production.
  • Minimum order quantities, and how small labels work with them.
  • Quality control, and the warning signs to watch for.

The tech pack

A tech pack is the full instruction set for one style. A trouser tech pack usually includes:

  • Flat sketches, front and back, with every detail marked.
  • A measurement spec for every size: waist, hip, front and back rise, thigh, knee, hem, inside leg, waistband height, pocket sizes, with a tolerance (how far each may vary).
  • The graded pattern, paper or digital.
  • A bill of materials: cloth, lining, interfacing, zip, buttons, thread colours, labels.
  • Construction notes: seam types and finishes, stitches per inch, topstitching, pressing.
  • Label and packing instructions.

See the design development lessons in Module 9 for spec sheets and flats.

The sample stages

  1. Proto sample: the first trouser made from your tech pack, to check the look and construction.
  2. Fit sample: tried on your fit model; changes are marked. Expect two or three rounds; the first sample is rarely right.
  3. Size set: one trouser in each size, to check the grading, especially the rise and the crotch curve across sizes.
  4. Pre-production sample (PPS): made in the bulk cloth and trims, the final approval before production. Keep one, signed and dated, as the sealed sample.
  5. Bulk production, with checks during the run and at the end.

Minimum order quantities

Most manufacturers set a minimum order quantity (MOQ) per style and often per colour, because setting up a line takes time. Small labels can:

  • look for units that specialise in small runs, accepting a higher cost per piece;
  • order fewer colours of one style rather than many colours in small amounts;
  • work with the same unit over several seasons, which often earns more flexibility;
  • start with a small trial order as a test of quality and reliability.
Quality control during production
  • Inline checks: check pieces from each bundle while sewing is under way, not only the finished batch.
  • Measurement checks: measure a sample of each size against the spec, especially rise, waist, inside leg and hem.
  • Visual checks: stitching, seam puckering, zip lie, pocket alignment, shade matching between panels, loose threads, stains.
  • Function checks: zips run, buttons hold, buttonholes are cut clean, waistbands stretch and recover.
  • Final inspection: agree beforehand how many pieces will be checked and what count of faults is acceptable.
  • Children’s trousers: extra checks on button pull strength, cords and drawstrings, and small parts (see Children’s clothing safety standards in Module 1).
Warning signs
  • No references or past work to show.
  • Quotes that change for the same specification.
  • Offering to skip samples to save time.
  • Reluctance to let you visit the production floor.
  • Vague answers about who will actually sew the order (it may be sent elsewhere).
  • Grading checked only on waist and hip; ask to see the rise and crotch measurements across sizes.
Domestic or overseas?

For an Indian label, most production will be in India, which has large garment centres including Bengaluru, Tiruppur, Delhi NCR, Ludhiana and others. Labels abroad weigh nearby production (easier communication, faster turnaround, often smaller minimums) against distant production (often lower cost at large scale, but more planning and harder quality control). For any distance, plan more time for samples and visits.

Tips, tricks and hacks
  1. Visit before you order and see work in progress.
  2. Ask to see garments the unit has made for others, with discretion.
  3. Plan three fit rounds in your calendar.
  4. Check rise and crotch on every size in the size set.
  5. Write tolerances clearly, in inches and cm.
  6. Seal and sign the PPS, and keep it in your studio.
  7. Use one contact person at the unit for all instructions.
  8. Confirm everything in writing after every call.
  9. Keep cutting records: how many pieces were cut, sewn, rejected and delivered.
  10. What professionals do differently: they budget time and money for samples as a normal part of production, not as an extra.
Problems and how to fix them

The sizes fit differently from the sample

  1. Measure the size set against the spec.
  2. Check the grade rules for rise and crotch.
  3. Prevention: approve a size set, not only the sample size.

The bulk looks different from the sample

  1. Compare with the sealed PPS.
  2. Agree corrections in writing.
  3. Prevention: inline checks from the first bundles.

Delivery is late

  1. Ask for a partial delivery of finished sizes.
  2. Agree a new date in writing.
  3. Prevention: dates set with buffer, and checks on progress.

The MOQ is too high

  1. Reduce colours, not styles.
  2. Look for small-run units.
  3. Prevention: ask about MOQs before sampling.

Seams pucker in bulk

  1. Check thread, needle and tension on the line.
  2. Test the cloth on a different machine set-up.
  3. Prevention: sew test seams in bulk cloth before production.

Labels or care information are wrong

  1. Stop packing and correct.
  2. Check against your label instructions.
  3. Prevention: approve a labelled PPS.

Cloth goes missing

  1. Reconcile cloth sent, pieces cut and cloth returned.
  2. Ask for the cutting record.
  3. Prevention: record cloth issued and agree what happens to leftovers.
What to ask your CA or a lawyer
  • Your CA: GST and paperwork for production orders and for cloth sent to the unit; how to record advances.
  • A lawyer: a production agreement covering quality, delays, rejects, ownership of patterns, and confidentiality.
Check yourself
  • Can I list what goes in a trouser tech pack?
  • Do I know the sample stages and plan time for them?
  • Do I check the size set, especially the rise?
  • Do I know the warning signs?
  • Do I keep a sealed sample?
Key terms
  • Tech pack: the complete instructions for making one style.
  • Tolerance: how far a measurement may vary from the spec.
  • Size set: one sample in each size.
  • PPS: pre-production sample, the final approval.
  • MOQ: minimum order quantity.
  • Inline check: a quality check during production.
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