Pre-Production Sample Checklist for Apparel Brands and Factories

Reviewed by Junsheen Product Development Team

A pre-production sample is the last complete product decision before bulk production begins. It should prove that the approved fabric, trims, pattern, measurements, construction, decoration, labels, packing and care route work together in the exact form the factory will make. It is not a ceremonial sample and it is not simply the best-looking proto.

Use this checklist with the Junsheen private-label service. The goal is to issue one controlled bulk instruction, identify every remaining exception and stop the line from relying on memory or scattered chat approvals.

Confirm that it is truly a pre-production sample

Start with identity. Record style code, revision, sample ID, intended order, factory, sample date, base size, colorway and the current tech-pack revision. List all materials and trims by their approved codes and lot or supplier references where available.

Do not call a sample pre-production merely because it arrives late in development. A true PP sample uses the intended construction, production-representative materials, approved pattern and planned finishing sequence. If a substitute fabric, sample-room zipper, temporary label or simplified print has been used, declare it plainly and identify the remaining risk.

Photograph the sample flat, on body, inside out and with all labels, trims and pack components. Preserve the signed sample as a physical reference after approval.

Reconcile every document before inspection

Open the tech pack, bill of materials, measurement specification, artwork files, label artwork, packaging specification and approved change log together. The sample may be correct while an outdated order sheet still instructs bulk to buy a different trim.

Check document version and release status. Every material used in the sample should point to a controlled record. Every visual change should have an approval date and owner. “Same as last sample” is not a specification.

Resolve contradictions before measuring. If the drawing says one button finish and the bill of materials says another, the sample cannot decide the commercial instruction by itself.

Verify fabric identity and hand

Compare the shell, lining, rib, pocketing and any contrast fabric with retained approved standards. Check supplier article, composition claim, face, back, mass, width relationship, color, hand and finish. If the PP sample uses a production lot, retain a cutting linked to the sample.

Composition does not prove equivalence. Two fabrics with the same fiber percentages can differ in yarn, density, brushing, compaction, stretch, recovery and wash behavior. Assess the material in the constructed garment because seams, interfacing and pressing change the experience.

Record discrepancies in operational terms: “body fleece feels firmer than approved standard after pressing,” not simply “hand feel not good.” The corrective action then has a target.

Measure the garment in the specified condition

Lay the garment on a stable surface and follow the illustrated point-of-measure map. Confirm whether it is measured relaxed, buttoned, zipped, washed, steamed or otherwise conditioned. Use the same landmarks across factory, brand and third-party inspection.

Measure all required points, not only points likely to fail. Include body length, width, shoulder, sleeve, armhole, neck, collar, rib, pocket, placket and product-specific features. Record actual result, tolerance, pass/fail and the measuring method.

For graded ranges, approve the base size and identify risk sizes that need size-set confirmation. A base-size pass does not prove that pocket position, sleeve balance or rib proportion survives grading.

Put the product on the intended fit model

Flat measurements cannot reveal every fit problem. Check the PP sample standing, walking, reaching, sitting or moving in the intended use. For jackets, evaluate shoulder, armhole, sleeve pitch and closure. For trousers, assess rise, seat, thigh, knee and leg balance. For knitwear, review drape, rib recovery and neckline behavior.

Compare with the approved silhouette statement. A sample can technically be inside tolerance while looking shorter, stiffer or tighter than the brand intended. Record correction location and direction, not only general comments.

If the fabric will change after laundering or washing, repeat fit review after the validated care or finishing route. The U.S. FTC’s Care Labeling Rule guidance makes the complete-garment basis for care instructions especially relevant.

Inspect construction inside and out

Examine seam type, seam allowance, stitch density, thread, reinforcement, bar tacks, edge finish, lining, binding, labels and loose-thread control. Turn the garment inside out. Many defects that are invisible on a hanger reveal poor workmanship or future failure on the reverse.

Check seams under reasonable movement. Look for skipped stitches, seam grin, puckering, broken thread, raw exposure, mismatched panels, uneven topstitching and distorted curves. For stretch fabrics, test recovery around seams. For woven garments, inspect grain and twisting.

State which characteristics are visual and which require a defined test or measurement. “High quality stitching” is not inspectable without criteria.

Test trims by function

Operate every button, zipper, snap, hook, drawcord, stopper, elastic and fastener. Confirm material, color, size, finish, placement and mating part. A zipper should travel cleanly through the intended range; a button should be securely attached; a drawcord should not disappear into its channel; a snap should not distort surrounding fabric.

Check trim compatibility with care, pressing and decoration. Heat can mark plastic; washing can alter metal finish; abrasion can damage coated hardware. Record any special application settings or protective packing.

Use a trim card or controlled component library, but verify the installed part rather than approving a loose sample alone.

Review artwork and decoration in production context

Compare embroidery, screen print, transfer, patch, label and other decoration with approved artwork at actual size. Measure placement from stable garment datums such as center front, high shoulder point, pocket seam or hem. A flat visual center can shift on body or across sizes.

Inspect color, registration, coverage, thread tension, print hand, edge definition and reverse appearance. Verify the actual digitizing, screen, ink or transfer version. A new artwork export can alter line thickness or color separation without changing the logo name.

Run the approved decoration through the intended care route. Decoration is part of the product and cannot be exempt from wash, flex or wear approval.

Check labels and legal content

Compare main label, size label, care label, fiber-content label, country-of-origin statement, warning labels and hangtags with the approved market-specific artwork. Confirm copy, order, fold, size, color, placement and attachment.

The FTC’s Textile Fiber Products Identification Act rules provide U.S. fiber-content labeling context. Requirements differ by market and product, so a PP approval should state the destination scope rather than treating one label as universal.

Verify that care instructions are supported by the tested complete garment. A label may be technically correct for the main fabric but wrong for a heat-sensitive print, unstable trim or lining.

Inspect color under controlled viewing

Compare shell, lining, rib, thread, print, labels and hardware under agreed lighting. Check face and reverse, seams, shade variation and color interaction. Different materials can interpret one target color differently because texture and gloss change perception.

Keep a physical color standard and identify the viewing condition and reviewer. Digital photos help documentation but should not be the final color authority. Compare a current production-lot sample with the approved standard before bulk release.

For garment wash, assess shade after the complete wash and drying route. Raw fabric color is not the final product color.

Validate finishing and care

Name every finishing process used on the PP sample: wash, enzyme, garment dye, softening, pressing, steaming, brushing, tumble treatment or coating. Record order and key controls. Changes to finish can affect dimensions, hand, appearance and decoration.

The ISO 6330 overview describes standardized domestic washing and drying procedures. Use a relevant defined process for development and repeat it rather than changing a cycle after a sample fails. The brand must decide what result supports the intended care promise.

Inspect post-care measurements, color, trim operation, print or embroidery condition, seam appearance and surface. Keep both unwashed and cared controls.

Approve packing as part of the product

Check folding, tissue, polybag, size sticker, barcode, hanger, carton, warning, assortment and shipping mark against the packaging specification. A garment may arrive correct but be damaged, mislabeled or difficult to sell because pack-out was never approved.

Place the actual PP sample into the intended package. Test that fragile decoration, hardware and trims are protected. Confirm that label placement and size identification remain visible where required.

For retail or e-commerce pack-outs, verify presentation after unpacking. Compression and folding can leave impressions on some fabrics and prints.

Issue an actionable disposition

Choose one of three clear outcomes: approved for bulk, approved with specifically controlled correction, or rejected/pending a revised PP sample. Never use an ambiguous “looks fine” as the release status.

An approval-with-correction note must state the exact change, affected color or size, responsible owner, evidence required and whether a new physical sample, photograph, first-off check or lab result is necessary. Structural, material, measurement, label or decoration changes often require renewed confirmation.

Seal the approved sample and attach the signed report. The factory and brand should retain matching references when practical.

PP sample approval table

Frequently asked questions

Is a PP sample the same as a size-set sample?

No. A size set verifies grading across sizes. A PP sample verifies the complete bulk-ready product, though it may refer to an already approved size-set decision.

Can bulk start with a PP sample approved by photos?

Only when the approval scope and risk are understood. Photos cannot fully prove hand, fit, construction, color or functional trims. Material or structural changes should normally receive physical verification.

What if the factory cannot use the exact PP material in bulk?

Treat it as a controlled change. Compare the candidate material, assess affected fit, care, appearance and compliance, and obtain the required new approval before cutting.

Who should sign the PP sample?

The appropriate brand product or technical approver and factory representative should be identifiable. The record should show what each party approved, not just a signature without scope.

Final rule

Release bulk only from a PP sample that represents the actual planned product and has a complete, versioned approval record. The sample, documents and decision must agree. That discipline keeps the factory from treating a concept sample as a bulk instruction and gives both teams a reliable standard when questions arise during production.

Sources

• FTC Care Labeling Rule guidance
• FTC Textile Fiber Products Identification Act rules
• ISO 6330 domestic washing and drying procedures