Sampling and Fit Rounds: From First Sample to Production

The sample stages at a glance

Every sample in cut and sew production answers a different question, and skipping one usually means discovering its problem later, at a higher cost. Names vary between factories, so agree on what each stage means before the first one is made.

Alongside the garment samples, several components get their own approvals: lab dips for each dyed color, a strike-off for printed fabric or decoration, trim samples (woven labels, drawcords, zipper pulls) and a bulk fabric check before cutting.

Before the first sample

The quality of the first sample depends almost entirely on what you send. That means a complete tech pack with a graded measurement spec, a reference garment if you have one, fabric swatches or the mill article you want, and final artwork prepared as described in the artwork guide. Mark the reference garment up with pins or tape where you want it changed, and photograph it so you keep a record.

Agree the practical terms before you start:

• The sample size, which should be your base size in the spec.
• How many samples of each stage are made, and how many come to you.
• How sample making and shipping are charged, and how many rounds the quote covers.
• Whether the factory keeps a counter sample (an identical piece kept on their side for reference).
• Who on your side approves, and in what form.

Proto samples: test the idea

Expect the proto to be wrong in places. Its job is to turn drawings into a three-dimensional garment so you can see proportions and construction. Check the overall silhouette, the balance between body and sleeve, how the neck sits, pocket and hood size, seam positions and whether the details match the flats.

Protos are often sewn in substitute fabric because the real fabric has not been knit or dyed yet. That is fine for judging shape, and risky for judging fit. A lighter jersey or a fleece with more stretch can measure and hang differently from the final cloth. Note fabric-dependent concerns and recheck them on the fit sample.

How a fit session works

A fit session is a structured check of a sample against the spec and on a body. Run it the same way every round so the comments are comparable.

1. Measure flat before anything else. Lay the sample on a table, measure every point of measure using the method in the spec, and record spec, actual and difference. Anything outside tolerance gets flagged.
2. Wash test if the fabric is final. Wash and dry one sample the way the care label will say, then measure again. Shrinkage and twisting side seams show up here, not on the unwashed piece.
3. Put it on the fit model. Use someone whose measurements match your base size, and the same person each round. Check standing, arms raised, arms forward and seated. Look for pulling lines, gaping at the neck, where the shoulder seam falls, sleeve length with arms bent, hem flare and hood depth.
4. Photograph front, side and back in the same positions each round.
5. Pin and mark. Pin out excess, mark new seam lines with chalk or tape, and measure the change.
6. Write comments as measurements. "Make it boxier" is an opinion. "Increase chest width +1 inch at base size, grade proportionally; reduce body length -1/2 inch" is an instruction a pattern maker can apply.
7. Update the tech pack with the revised spec and a new version number, and send it with the comments and the marked sample if the factory needs it back.

A fit comment sheet keeps each round in one place:

The values in that sheet are illustrative. The point is the structure: one line per measurement, a clear decision and a new number where the spec changes.

How many rounds to plan for

There is no fixed number. Rounds go up with each of these:

• A new pattern rather than one the factory already makes, or a fit far from its usual blocks.
• Complex garments: hoods, zippers, panels, pockets, linings.
• Vague comments that leave the pattern maker guessing.
• Fabric that arrives late, so fit is judged in substitute cloth and has to be rechecked.
• Changing your mind about the design between rounds, which restarts part of the work.

Each round costs the time to make the sample, ship it, review it and turn comments around. Plan the calendar for two fit rounds on a new style at minimum and give yourself room for a third. The timeline guide shows where sampling sits in the overall schedule.

Size sets: checking the grading

Once the base size is approved, a size set shows whether grading has kept the shape across the range. Measure every size against the graded spec. Then look at the extremes: proportions that look right in a medium can make a small look cropped or an XXL look like a tent. Try the smallest and largest sizes on people who wear them.

Check that print and embroidery sizes still suit each size group (the placement guide shows how artwork scales across a run), and that labels and neck finish hold up at the small end where space is tight. If one size is consistently off, the grade rule for that point usually needs adjusting, not the base pattern. The size run guide helps decide how many of each size to make once the set is right.

Lab dips, strike-offs and trims

Run component approvals in parallel with fit so they do not hold up the PP sample.

• Lab dips. The dye house sends small swatches dyed to your Pantone textile reference, often labeled A, B and C with slight variations. View them in a light booth under daylight (D65) and under a store-type light such as TL84, because a color can match under one light and not the other. Approve one, or reject with a direction ("redder, less yellow").
• Strike-offs. A test print or embroidery on the real fabric confirms color, hand feel and registration before bulk. For embroidery, the stitch-out also tests the digitized file on that fabric.
• Trims. Approve physical samples of woven labels, hang tags, drawcords and zipper pulls. Digital proofs miss weave texture and color shifts.
• Bulk fabric. Before cutting, check a length of the bulk fabric for weight in GSM, shade against the approved lab dip, hand feel and shrinkage. The fabric guide covers what to test.

Pre-production and top-of-production samples

The PP sample is the last chance to change anything cheaply. It should be made from bulk fabric, bulk trims, final labels, final decoration and the agreed packing. Measure it, wash test it, check every label against the tech pack and the labeling requirements, and compare colors with the approved lab dips. Approved, it becomes the sealed sample: the physical reference for production, tagged and signed, with one kept by the factory and one by you.

The TOP sample comes from the first finished units of the run. Measure several pieces across sizes, not just one, and compare them with the sealed PP. Check labels, folding and packing too. If TOP fails, stop and agree the fix before more units are made: rework, adjust the line or accept a documented deviation. Waiting until the whole run is finished removes every option except accepting it.

Approving a sample in writing

Verbal approvals cause most production disputes. Approve every stage in writing, in the same format each time:

• The sample type, style number, color and size.
• The tech pack version it was checked against.
• The decision: approved, approved with comments, or rejected.
• Every comment, numbered, with any revised measurements.
• Photos of the sample and the comment sheet attached.
• The name of the person approving and the date.

Keep one decision-maker on your side. Two people sending different comments on the same sample guarantees a confused next round, and the factory will reasonably follow whichever message arrived last.

Useful for: clothing brands, creators.