Sampling Rounds: How Many Are Normal and What Each Round Should Prove

Sampling Rounds: How Many Are Normal and What Each Round Should Prove

Two to three sampling rounds is the normal range for a custom linen apparel program. A first proto sample proves the pattern, silhouette and construction are buildable. A second fit or size-set sample proves the garment works on real bodies and survives the first wash. A third pre-production sample proves the bulk fabric, trims and labels before the cutting table opens. At Linenwind, each round takes 7-12 days in the sample room, and the full sampling window is 7-14 days once courier time is included.

Most buyers who ask how many rounds to expect are really asking two quieter questions: am I being slow, and is my factory being slow? Those are different problems. A brand that returns comments in 48 hours with one consolidated sheet moves through three rounds in about five weeks. A brand that sends feedback in four separate emails over three weeks will take twice as long with the same factory, and neither side will be able to say exactly where the time went.

This guide breaks sampling into distinct rounds, states what each round is supposed to prove, and shows where rounds get added without adding value. It is written for brand owners, production managers and sourcing teams placing linen orders with a Dongguan factory, and it uses the same production figures we quote to buyers every week: 60 pieces minimum per style and colour, 7-12 days per sampling round, 25-35 days for bulk after approval, and 35-60 days for a first order door to door.

What Actually Counts as a Sampling Round

A sampling round is a new sample built from a changed pattern or a changed specification. If the pattern file, the fabric or the construction changes, you are in a new round. If a single measurement moves 1 cm and nothing else changes, that is a revision, not a round. Revisions typically take 3-5 days because the sample room only has to re-cut one panel or re-sew one seam. Rounds take 7-12 days because the garment is rebuilt from the pattern up.

The distinction matters commercially, not just semantically. Factories price and schedule sample room capacity by rounds, because a round consumes a pattern maker, a cutter, a sewer and a finisher. Buyers who treat every tweak as a round will overestimate their timeline and often push for corners to be cut. Buyers who treat a genuine round as a tweak will be surprised when the sample arrives three weeks late.

A simple test: would the change alter the measurement chart, the fabric consumption or the bill of materials? If yes, it is a round. If it only corrects a sewing fault on an otherwise approved spec, it is a remake and should be handled as a quality correction at no cost to you.

If you are new to how a sample room sequences work, our walkthrough of the linen clothing sampling process shows the order of operations from pattern digitising to final pressing, which is useful context for judging whether a delay is normal.

How Many Rounds Are Normal for a Linen Program

Round count is not a measure of diligence. It is a function of how much is new in the style. The table below maps the common scenarios we see across first orders and repeat programs.

Two rounds is the most common outcome for a brand with a complete tech pack and a fabric we already hold in stock, which covers more than 50 specifications at any time. Three rounds is normal when the fabric is new to us, when the silhouette is outside the blocks we run daily, or when the brand's fit model differs materially from the base size the pattern was drafted on.

Where buyers get into trouble is expecting one round to do the work of three. A single sample can only answer one question well. Asking a proto sample to also confirm fit across five sizes, shrinkage after three washes and the final label placement is how a two-week program becomes a six-week one.

Round One: The Proto Sample and What It Proves

The proto sample, sometimes called the development sample, answers a single question: can this design be built as drawn, and does it look and hang the way the brand imagines? It is made from the closest available fabric, often a stock linen in a similar weight, because the point is proportion and construction, not final colour.

What a good proto proves:

• Pattern integrity. The panels close, the armhole sits where it should, and the collar or placket rolls correctly in a fabric that has almost no stretch.
• Silhouette and proportion. Whether the intended oversized shape reads as relaxed or simply large, and whether a dropped shoulder lands where the sketch intended.
• Construction feasibility. French seams, bound edges, narrow hems and curved yokes behave differently in 100-260 GSM linen than in cotton jersey, and the proto shows which seams need re-engineering.
• Fabric behaviour. Linen drapes with weight and softens with washing; the proto is the first honest look at how the cloth moves on a body.
• Trim compatibility. Whether the buttons, cord and tape the brand chose are proportionate to the garment.

What a proto cannot prove is equally important. It cannot confirm fit across a size range, because it is usually made in one size. It cannot confirm bulk fabric consistency, because it is often cut from sample-room stock. And it cannot confirm that the factory can produce the style at speed, because a sample room and a production line solve problems differently.

For a structured way to review the physical garment rather than the sketch, the 12-point review in our guide to fit testing a linen sample covers balance, seam behaviour and wash response in the order a technical team should check them.

Round Two: The Fit and Size-Set Sample

The second round is where most of the real risk sits, because it is the first time the garment is judged on a body and after washing. This round should be made in the brand's base size on a fit model, then repeated across the size set if the brand is running more than three sizes.

Three things should be settled in this round, and only these three:

1. Fit on the intended body. Shoulder position, bust or chest ease, waist placement, sleeve length and hem line, judged on a model who matches the target customer rather than on a hanger.
2. Grading. Whether the grade rules produce a coherent range. Linen behaves differently from stretch fabrics, and a rule set copied from a jersey program usually fails at the extremes of the range.
3. Wash behaviour. Linen commonly shrinks 3-7% on the first wash depending on weave, yarn and finishing. The fit sample must be measured before washing, washed at the care temperature the label will state, dried as the label will instruct, and measured again. A garment that fits before washing and not after is not approved.

The most common failure in this round is not a bad sample, it is a bad fit session. When the designer, the fit model and the factory's pattern maker are not looking at the same garment at the same time, comments arrive as opinions rather than measurements. The fix is procedural: pin the garment, photograph the pinning, write the correction as a number in the measurement chart, and send one sheet.

Fit comments should also distinguish between a pattern correction and a construction correction. "Take in the side seam 1.5 cm at waist" is actionable in the pattern. "Feels boxy" is not, and it will cost you a round while both sides guess.

Round Three: The Pre-Production Sample

The pre-production sample, or PP sample, is not a design review. It is the factory's statement that the garment can be reproduced in bulk exactly as approved. It must be made from bulk fabric, with bulk trims, bulk labels and the production pattern, on the line or in the sample room using production methods.

Check these before signing:

• Fabric identity. Same mill, same construction, same weight within tolerance, same dye lot family as the bulk roll. A PP sample in a "close" substitute fabric is not a PP sample.
• Colour. Compared against the approved lab dip or bulk standard under the same light source the brand will use, not under the sample room's window light.
• Measurement chart. Full chart for the sealed size, measured flat, with tolerances stated. AQL 2.5 is the inspection standard we apply at bulk, and the chart tolerances should be tight enough to pass it.
• Labels and trims. Care label content, fibre composition, origin, brand label placement, hangtag attachment and any market-specific requirement already agreed.
• Packing. Poly bag, size sticker, folding method and carton configuration, since these are the details that generate chargebacks from wholesale accounts.

Once approved, the PP sample is sealed. One signed sample stays at the factory as the production standard, one goes to the brand, and both carry the same signed measurement chart and trim card. From that moment, any deviation is a documented change, not a matter of memory.

The Three Rounds Side by Side

Add courier time of 3-7 days per shipment, and three rounds plus two comment cycles lands at roughly five to six weeks before bulk starts. That timeline then feeds into 25-35 days of production and, for a first order, a 35-60 day door-to-door window. Our breakdown of linen clothing lead times shows how sampling, bulk and freight stack up across a full season.

Why Sampling Rounds Stretch

Almost every overrun we see traces back to one of eight causes, and only two of them are inside the factory's control.

• Fabric is not in stock. A shade or weight the buyer assumed was available has to be woven or dyed, adding two to four weeks before the round can start.
• The tech pack is incomplete. Missing grade rules, unspecified seam allowances or an unresolved trim choice force the pattern maker to guess, and guesses generate rounds.
• Comments arrive in pieces. Three emails over ten days produce three partial corrections and often a fourth round.
• Too many approvers. When design, marketing and a founder all comment separately, corrections conflict and the sample room waits for a tiebreak.
• Silent specification changes. The brand changes a fabric or a pocket without telling the pattern maker, so the next sample is built to the old spec.
• Courier and customs. A sample held at customs for five days is invisible in the factory's schedule and very visible in yours.
• Sample room queue. August to October is peak sampling season for spring programs; slots booked late arrive late even when the tech pack was perfect.
• Re-grading after fit. Pattern work that should have been scoped during round two gets deferred to round three, where it collides with the production start date.

Two of these are factory-side: queue management and pattern capacity. The other six are shared or buyer-side. That ratio is worth remembering when a timeline slips, because the fastest improvement is usually a better input document. Our guide to tech packs for linen clothing lists exactly what a pattern maker needs before a sample slot is worth booking.

How to Cut Rounds Without Cutting Corners

Fewer rounds is a process outcome, not a shortcut. The levers below routinely take a three-round program to two without removing any real check.

1. Start from a fabric we already hold. More than 50 linen specifications sit in stock across 100-260 GSM, so a prototype can begin this week rather than after a weaving cycle.
2. Send one consolidated comment sheet within 48 hours. Photograph the issue, state the correction as a number, and rank it as critical or nice-to-have.
3. Send a reference garment. A physical garment the brand already sells communicates fit and hand faster than three pages of description.
4. Agree grade rules before round one. Decide the size range and the grade spacing up front so the fit sample is reviewed against a plan rather than an improvisation.
5. Nominate one decision maker. Collect internal comments first, then send one voice. The factory should never have to arbitrate between two colleagues.
6. Freeze the specification after round two. Any change after that point is a documented change order with a date and a cost, which concentrates attention wonderfully.
7. Book the sample slot early. A slot can be reserved before the tech pack is final; the pattern maker starts as soon as the pack lands.
8. Review remotely with measurements, not opinions. If nobody can attend the fit session, ask for pinned photos plus the flat measurement sheet, and give a decision in writing.

There is also a cost argument. Each extra round consumes sample material, labour and courier spend, and delays the bulk deposit that starts production. Sample fees at Linenwind run $40-150 per style and are fully refunded against the bulk order, and swatches are free, so the fee itself is rarely the issue. The real cost of a fourth round is the two to three weeks of selling season it removes. Our note on reducing linen manufacturing costs treats sampling discipline as a cost lever for exactly this reason.

What Each Approved Round Should Lock Down

An approval is only useful if it produces a record. Before moving to the next round, confirm that the following exist and match:

• A sealed, signed sample held at the factory and one at the brand.
• A signed flat measurement chart with tolerances for the approved size.
• A trim card listing every component with its reference and supplier.
• A wash and shrinkage record showing before and after measurements, with the test temperature.
• A colour standard, whether a lab dip, a bulk swatch or a physical standard retained by both parties.
• Label artwork approval covering fibre content, origin, care instructions and market-specific wording.

When a Fourth Round Is the Right Call

Three rounds is a norm, not a ceiling. A fourth round is justified when the risk being tested is genuinely new: a first move into linen outerwear where interlining and shoulder structure change the drape, a garment-dye or over-dye process where colour and shrinkage interact, a licensed or regulated product where labelling must be verified on a finished garment, or a new market whose labelling and fibre requirements the brand has not shipped to before.

What is not justified is a fourth round to resolve something that should have been decided in round one. If round four arrives and the comments are about proportion and silhouette, the problem is not the sample room; it is that nobody signed off the design brief.

The Calendar Math Buyers Should Plan Around

For a two-round program using stock fabric: 7-12 days for the proto, 3-5 days for courier, 48 hours for comments, 7-12 days for the fit sample, 3-5 days for courier, 48 hours for approval, then 7-12 days for the PP sample if the brand wants one. That is roughly four to five weeks of sampling before bulk. For a three-round program it is five to six weeks. Bulk then runs 25-35 days, and a first order with freight and customs lands at 35-60 days from deposit.

Working backwards from a launch date is the single most useful planning habit in this process. If the collection must be in market on 1 April, the PP sample needs approval by mid-January at the latest, which places the first proto in early December and the tech pack in November. Buyers who book sampling slots in peak season without that backwards calendar are the ones who end up paying air freight to protect a date.

Sampling Rounds: Questions Buyers Ask

Planning Your Sampling Calendar

Sampling rounds are not a measure of how careful a brand is. They are a count of how many genuinely open questions remain when the first sample is cut. Two to three rounds is normal; each round should answer one question and end with a signed record; and every extra round should be justified by a new risk rather than an old indecision.

If you are planning a linen program for the coming season, we can quote sampling and bulk together from a tech pack or even a clear sketch, with a 48-hour first response and a full quote in 3-7 working days. Send your brief through our contact page and tell us the launch date you are working towards, so the sampling calendar can be built backwards from it rather than forwards from today.