Quality Control Checklist for Knitted Underwear From Bangladesh
A numbered, printable QC checklist for knitted underwear from Bangladesh: measurements, waistband, leg opening and gusset checks, common defects, tests and packing checks before shipment.
Short answer
A knitted underwear quality control checklist is a numbered pre-shipment check of briefs, boxer briefs and trunks against the approved sample, tech pack and purchase order. It covers quantity, fabric and shade, measurements, waistband, leg openings and gusset, workmanship, labels, stretch and seam checks, and packing, with each defect classified as critical, major or minor and compared with the agreed AQL limits before release.
On this page
Key takeaways
Inspect against the approved sample, tech pack and purchase order, never from memory: waistband, leg openings and gusset are the underwear-specific failure points.
Agree the AQL levels and defect classes in writing before sampling, commonly AQL 0 for critical, 2.5 for major and 4.0 for minor defects in apparel.
Record actual measurements against tolerance for every size, and draw the final sample from packed cartons, not only from loose pieces.
A wrong size, care or fiber-content label is a compliance defect, not a minor cosmetic point, and a failed lot should be reworked and re-inspected before release.
Use this knitted underwear quality control checklist before a knitted underwear order from Bangladesh leaves the factory. It turns your approved specification for briefs, boxer briefs and trunks into pass-or-fail checks an inspector can complete piece by piece, size by size and carton by carton before shipment.
Underwear is fit-critical and worn against the skin, so a twisted waistband, a tight leg opening or an off-center gusset is felt on every wear.
Why this checklist matters
Knitted underwear combines stretch fabric, elastic, binding and several small pieces in a compact garment. A waistband joined slightly short changes the fit of a whole size, and uneven leg elastic makes one opening tighter than the other.
Knitwear is a large part of Bangladesh apparel exports. Knitwear exports rose 6.88 percent to $5,963.76 million in July to September of FY2026-27, while total ready-made garment exports reached $10,578.56 million in the same period, according to data released by the Export Promotion Bureau (EPB).1
A written checklist creates a shared standard: buyer, factory and inspector judge the same points against the same references, catch problems while correction is still possible, and leave a dated record linked to the purchase order.
For sampling, many buyers use acceptance quality limit (AQL). ISO 2859-1 defines a system of acceptance sampling plans for inspection by attributes, and it uses the AQL to determine sample sizes and acceptance and rejection thresholds for a lot.2 AQL is the maximum average percentage of defective items considered acceptable during random sampling.2
Before you start
Do not start until the references are in the room. Gather:
The purchase order: styles, colors, sizes, quantities, destination and packing instructions.
The approved pre-production sample in each style, and any later approved sample.
The tech pack: measurement chart with tolerances, fabric and elastic specification, gusset construction and stitch details.
Approved color references, such as lab dips or a swatch for every color, including elastic and binding.
Measuring tools: a flexible tape, a ruler, and a flat, well-lit table.
The agreed acceptance standard, including AQL levels and defect limits per class.
A camera for defect and packing photographs.
In apparel practice, brands commonly set AQL 0 for critical defects, AQL 2.5 for major defects and AQL 4.0 for minor defects, following ISO 2859-1 and General Inspection Level II.3 Agree your own levels in writing before sampling begins. Confirm the quantity presented, with cartons accessible so samples come from across the order. Part-finished goods cannot be reported as a final result. See AQL — acceptance quality limit and pre-shipment inspection.
The full checklist
Work in order. Tick each point, photograph failures, classify defects as critical, major or minor, and compare totals with the acceptance limits.
A. Quantity and style verification
Style, description and colors match the purchase order for every size.
Quantities per size and color match the order, allowing only variations approved in writing.
Each sampled garment matches the approved sample for fabric, construction, elastic, trims and finish.
B. Fabric and color
Fabric appearance and hand feel match the approved swatch, with no holes, stains, ladders or snags beyond the standard.
Color of body fabric, waistband elastic, leg elastic or binding, and gusset matches the approved reference under consistent, neutral light.
Any print, waistband lettering or embroidery matches the approved artwork for design, spelling, color and placement.
C. Measurements
Measure pieces flat, relaxed and unstretched, at every chart point, typically waist relaxed, hip or seat, front rise, back rise, side seam and leg opening.
Measure waistband width and gusset width and length where the chart lists them; check stretched measurements only as the chart specifies.
Record each measurement against its size and tolerance; flag points outside tolerance and measure further pieces in that size.
Compare left and right leg openings; re-measure obvious asymmetry.
Measurement deviations beyond the agreed tolerance are treated as major defects in apparel AQL practice, as are open seams and missing labels.3 Record the actual measurement.
D. Waistband, leg openings, gusset and workmanship
The waistband is evenly joined, lies flat without waving or twisting, and its join sits where specified.
Waistband elastic is not exposed, cut or nicked, and its join is secure without a hard lump.
Leg elastic or binding is evenly applied on both legs, sits flat without puckering, and is secure at every join.
The gusset, where fitted, is the correct fabric and shape, centered and symmetrically sewn, with no raw edges inside.
Front pouch or contour seams, where fitted, are centered, symmetrical and securely sewn.
All seams are complete, even and secure, with no skipped or broken stitches or untrimmed threads; hems do not twist.
No stains, oil marks, dirt, needle damage or pressing marks, inside or outside.
Labels are correct and legible: size matches the actual size, and care and fiber content match the order and destination.
Label wording is a compliance check, not a cosmetic one. In the European Union, Regulation (EU) No 1007/2011 requires a textile product to be labeled with the name and percentage by weight of all constituent fibers in descending order, and labels must be durable, legible, visible and securely attached.4 In the United States, the Federal Trade Commission (FTC) Care Labeling Rule requires manufacturers and importers of textile wearing apparel to attach care labels stating what regular care is needed for ordinary use, with a reasonable basis held before sale.5 A wrong label is therefore a failed product.
E. Simple functional checks
Gently stretch waistband and leg openings and release them; they should recover evenly without distortion or stitch cracking.
Gently pull the main seams, waistband join and gusset seams; they should not open or slip.
Stack folded pieces of the same size and style; re-measure obvious differences in waist, rise or leg opening.
Carry out any wash, colorfastness or laboratory test only as agreed in advance, and record the method used.
Where wash testing is agreed, ISO 6330 specifies domestic washing and drying procedures for textile testing, applicable to fabrics and garments, and it is used for evaluations that include dimensional change and color fastness to domestic laundering.6
F. Pressing, folding and packing
Pieces are clean, dry and neatly folded to the specified dimensions and method, without scorch, shine or hard creases.
Individual packing matches the instruction, with correct size identification visible where required and any inserts or hangtags attached.
The size and color ratio in each carton matches the packing list; carton markings show style, color, sizes and quantities.
Cartons are sound and correctly closed; the total count matches the packing list, and a final sample from packed cartons passes the style, size, label and packing checks again.
See also how to import knitted underwear from Bangladesh.
Common failures and how to fix them
Measurement drift. One size moves outside tolerance as a pattern or sewing setting shifts. Isolate that size, measure a larger sample, and rework or replace failures.
Twisted or wavy waistband. Elastic stretched unevenly in sewing waves or twists in wear. Re-apply or replace affected waistbands; correct the set-up first, then re-inspect.
Uneven leg openings. One leg sits tighter or looser than the other, usually from uneven elastic application. Rework affected pieces and check both legs on a larger sample.
Gusset faults. A gusset sewn off-center, reversed or with uneven edges is uncomfortable in wear. Re-sew or replace affected pieces.
Shade variation. Pieces in the same color differ, or fabric, elastic and binding do not match, usually because lots were mixed. Sort suspect cartons under consistent light and replace mismatched pieces.
Stitching and finishing defects. Open seams, skipped stitches, loose threads and puckered hems can often be repaired: restitch, trim and re-check. Replace pieces where seams holed the fabric.
Stains and soiling. Clean only by a buyer-approved, fabric-safe method, then re-inspect. Replace pieces that cannot be cleaned to standard.
Wrong labels or packing ratio. Relabel or repack affected cartons completely, then draw a fresh sample to verify.
In every case: correct, re-inspect, and record. If defect counts reach the reject number, hold the lot, complete the agreed rework, and re-inspect before release.
Summary table
File this summary with the inspection report and purchase order.
Section | What is checked | Result to record |
|---|---|---|
Quantity and style | Quantities per size and color | Counts and any variance |
Fabric and color | Fabric, shade, elastic and binding | Pass or fail per color, with photos |
Measurements | Every chart point per size | Actual measurements against tolerance |
Waistband, legs, gusset, workmanship | Waistband, leg elastic, gusset, seams, stains, labels | Defects as critical, major or minor |
Functional checks | Recovery, seam strength, agreed tests | Method used and result |
Packing | Folding, packing, ratio, carton marks | Carton sample result and total |
Before shipment, agree the sampling basis, schedule the final check as a formal pre-shipment inspection, and arrange an independent check, if needed, through inspection services.
How Exportain helps
Exportain is a marketplace where buyers find Bangladeshi knitwear suppliers, post requests for quotation and compare replies in one place. Share your tech pack and measurement chart with shortlisted suppliers, and use the platform verification information to see which document and photo checks have been recorded. Those checks are reviews of documents and photos, not factory inspections, and they do not replace your own sample approval, purchase order or inspection. Exportain is not a party to your contract for goods, and it does not inspect goods, book freight or clear customs.
FAQs
When should this checklist be used?
Use it at the pre-shipment stage, when production is complete and packing is finished or at the stage agreed with the inspector, so loose pieces and packed cartons can both be checked.
Who should complete it?
A competent inspector working from the approved sample, tech pack and purchase order should complete it: the buyer representative, an independent provider, or a factory quality manager, provided the standard was agreed in advance and findings are recorded with measurements and photographs.
What are the most common failures?
The most common failures are measurements outside tolerance, twisted or wavy waistbands, uneven leg openings, off-center gussets, shade variation, stitching defects such as open seams and skipped stitches, stains, and packing errors including wrong size ratios and incorrect labels.
Can a third party do it?
Yes. A third-party provider can complete this checklist at the factory on the buyer's behalf, using the buyer's approved references and agreed standard, and report measurements, defect counts and photographs to the buyer.
Next steps on Exportain
Browse Bangladeshi suppliers for knitted underwear, review how to buy, and post an RFQ with your tech pack, size breakdown and agreed AQL levels.
Sources
- RMG exports rise 6.10pc to US$10.58b in July-Sept of FY27. The Financial Express, (accessed )
- ISO 2859-1:2026 - Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection. International Organization for Standardization (accessed )
- AQL Inspection in Apparel: A Practical Guide (2026). Wave PLM (accessed )
- Regulation (EU) No 1007/2011 on textile fibre names and related labelling and marking of the fibre composition of textile products. European Union, (accessed )
- Jones Apparel Group Agrees to Pay $300,000 Civil Penalty to Settle FTC Charges of Violating the Care Labeling Rule. Federal Trade Commission (accessed )
- ISO 6330:2021 Textiles — Domestic washing and drying procedures for textile testing. International Organization for Standardization (accessed )
About the author
Sourcing from Bangladesh?
Post a request for quotation and suppliers on Exportain can send you their quotes directly.
Post an RFQ
