Quick answer: A pre-production sample exists to answer every open question before bulk material is cut. Approve it against the written specification item by item, test it the way the end customer will use it, check colour and finish under realistic light, and confirm that the packing protects the product in transit. Then approve a retained physical sample in writing. Buyers who skip the written approval usually discover the disagreement at the reorder, when there is no reference to check against.
What a pre-production sample is for
The sample is the last point at which a change is cheap. Pattern, panel count, material, hardware, interlining and decoration are all still adjustable; once bulk material is cut, they are not. Treating the sample as a formality trades a small amount of time now for a much larger cost later.
Its purpose is therefore specific: to prove that the buyer’s description and the factory’s interpretation are the same product. Every discrepancy found at this stage is a conversation. Every discrepancy found after production is a commercial dispute.
Check it against the specification, item by item
Use the specification as the checklist and record a result for each line rather than forming an overall impression. An overall impression is what allows a mismatch in one field to pass unnoticed.
- Dimensions. Measure width, height and depth at the points the specification defines, and check strap drop or handle length. Take the measurement on the bag as it will sit when used — an empty unstructured tote measures differently from a loaded one.
- Material. Compare against the retained swatch, not against memory. Check weight or thickness and finish, and check that the same material is used on all panels — a lighter material on an inside panel is a cost saving that should be a decision, not a surprise.
- Hardware. Confirm zipper type and length, slider, snaps, rings and plating. Operate each one: a zipper that catches on the first pull usually catches worse in service.
- Structure. Check that interlining and stiffening produce the intended shape, and that reinforcement is present at handle attachments, strap anchors, zip ends and base corners.
- Stitching and edges. Check stitch density and consistency, thread colour, backstitching at stress points, and the edge finish method.
- Branding. Confirm method, placement, size and colour against the artwork, and check how the decoration behaves on the actual surface rather than on a swatch.
Test it the way the customer will use it
A sample can pass inspection on a table and still fail in the first week of use. Five checks catch most of it:
- Load it. Fill the bag to its intended capacity, or above it, and carry it. Watch the base, the handle attachments and the zip under load.
- Open and close it repeatedly. Zips, snaps and magnetic closures wear through use, not through appearance.
- Handle it roughly. Set it down, pick it up, drop it lightly. Scuffs and marks appear where the bag meets the ground and where it is gripped.
- Fold or pack it if the product is meant to be folded for retail or shipping. Fold lines reveal cracking risk in coated materials.
- Clean it the way the customer will. A mark that cannot be removed with the intended method is a complaint waiting to happen.
Our notes on material behaviour and on structure and stitching explain what each of these checks is looking for.
Check colour and finish under the right light
Colour is judged more often by eye than by instrument, and the eye depends on the light. A sample inspected in a factory under cool white light and then seen in a store under warm light will read differently, which turns a technical result into a subjective argument.
- Inspect the sample under the lighting the product will actually be sold in, and under daylight where possible.
- Compare against the approved colour reference, not against the previous order in memory.
- Look at the material at an angle as well as straight on. Coatings and embossed finishes change appearance with viewing angle.
- Check colour across panels that came from different rolls or batches; a subtle difference between the body and the flap is visible to a customer even when it is invisible on a swatch.
Check how it arrives, not only how it looks
Packing is part of the product. Examine the sample in the packing it will ship in, not loose:
- Does the packing hold the shape of the bag and protect the surfaces that matter — the front panel, the base and the corners?
- Is the individual packing suitable for the sales channel: transit polybag for bulk, retail box or sleeve for shelf presentation?
- Does the carton configuration match the quantity per carton in the quotation, and is the carton weight and size within the limits the destination or the retailer requires?
- Are hangtags, stuffing and protective film included and correct? These are small items that are consistently forgotten and consistently charged for later.
Where a delicate material is involved, packing becomes a specification in its own right. Our case notes on a suede tote programme set out how surface protection was handled in volume production.
What approving a sample commits both sides to
- The buyer accepts the appearance, dimensions and function as sampled. Complaints about these points after approval are specification disputes rather than defects.
- The factory accepts the sample as the production reference. The first units off the line should be checked against it, and the sample should be retained for the life of the programme.
- Both sides accept the tolerances. Soft goods vary slightly between units; the tolerance written on the specification is what defines a defect.
Managing changes after approval
Changes are normal; undocumented changes are the problem. When a change is raised after approval:
- Write it down and identify which specification field it affects.
- Ask for the cost and schedule impact before agreeing, rather than after.
- Re-approve if the change affects appearance, function or any part that takes load, and retain the updated sample.
- Update the specification document so the next order starts from the current version.
Buyer FAQ
How many rounds of sampling should I expect?
Two is normal for a new style: the first sample establishes the interpretation, the second confirms the corrections. More rounds usually indicate that the specification contains open questions rather than that the factory is slow.
Do I need to be present to approve a sample?
No, but the approval should be documented. A photo set covering every specified item, plus the measured dimensions, is enough to record what was agreed when a physical sample cannot be shared.
What is the most commonly missed check?
Loading the bag. Samples are usually examined empty, on a table. Handle attachments, base reinforcement and zip behaviour under load are precisely the points where a bag fails in service and rarely fail on a table.
Should the approved sample be kept by the factory or by me?
Both, ideally — or the factory keeps it and confirms in writing that it will be retained. Reorders and production checks should be carried out against a physical reference rather than against photographs or the buyer’s recollection.