What AQL means
AQL stands for acceptance quality limit. It is a statistical sampling approach used across consumer goods, including apparel. Instead of inspecting every unit, the inspector draws a random sample from the finished lot, checks each piece against the specification, counts the defects and compares the count with numbers agreed before inspection. If the count is at or below the acceptance number, the lot passes. If it reaches the rejection number, the lot fails.
The important word is "agreed". AQL is not a quality grade that a garment has. It is a set of rules both sides sign up to: how big the sample is, which defects count, how they are classified and how many of each class are acceptable. Those rules are set per order, in writing, before production finishes.
The parts of a sampling plan
An AQL sampling plan is built from published sampling tables. You do not need to memorize them, but you should know what each input does, because each one is a decision.
| Element | What it is | Why it matters to you |
|---|---|---|
| Lot size | The quantity being inspected, usually one shipment or one style | Larger lots mean a larger sample under the same plan |
| Inspection level | How much of the lot is sampled relative to its size | A higher level gives more confidence and takes more inspection time |
| Sample size | The number of pieces actually checked, read from the table | Should be drawn across colors and sizes, not from one carton |
| AQL per defect class | The quality limit set for critical, major and minor defects | Stricter limits for defects that matter more to the customer |
| Acceptance and rejection numbers | The defect counts at which the lot passes or fails, read from the table | Removes the argument after inspection, since the line was drawn before |
We do not print a table of numbers here on purpose. The right AQL levels depend on your product, your channel and the risk you are willing to carry, and they are agreed per order. What matters is that the plan is written down and attached to the purchase order.
Defect classes in activewear
Most inspection plans sort defects into three classes. Writing examples for your own product into the specification is more useful than relying on an inspector's general judgement.
- Critical: a defect that could harm the wearer or break a legal requirement. Examples include a broken needle fragment, a sharp trim edge, or a missing or wrong fiber content label on a garment sold in the US. Many buyers accept no critical defects at all.
- Major: a defect likely to cause a return or make the product unsellable. Examples in leggings and bras: see-through seat in the approved color, open or skipped seams at the gusset, waistband elastic twisted or rolling, measurements outside tolerance, logo misplaced or peeling, wrong size label.
- Minor: a defect that a customer might notice but would usually still keep the item. Examples: a short loose thread, a small mark that washes off, slight unevenness in a hem that does not affect fit.
What an activewear inspection checks
A general apparel checklist covers workmanship and packing. Activewear needs a few extra items that are specific to stretch garments.
- Quantity and packing: carton count, size and color breakdown, polybag, size sticker, carton marks.
- Labels: fiber content, country of origin, care label and any RN or brand label in the right place.
- Measurements: key points such as waist relaxed and extended, hip, inseam, rise, and bra underband, against the tech pack tolerances.
- Workmanship: flatlock and coverstitch seams, gusset joins, bonded edges, pocket openings, logo application.
- Function: stretch the seams and waistband to check for cracked stitches; run the opacity check on the lightest color.
- Color: compare against the approved standard, and check shade consistency between pieces sold as a set.
The tech pack is the reference for every point on this list. If a tolerance or a construction detail is not in the tech pack, the inspector cannot fail a garment for it. The tech pack note lists the fields that inspections rely on.
When inspections happen
AQL is most often used for the final random inspection, when production is finished and most of the order is packed. Two earlier checks reduce the chance of a surprise at that point.
| Stage | Purpose |
|---|---|
| Pre-production check | Confirm bulk fabric, trims, colors and the approved sample before cutting or knitting starts |
| During production | Check the first finished pieces off the line, so problems are fixed while most of the order is still in progress |
| Final random inspection | Apply the AQL plan to the finished, mostly packed lot before shipment |
For small orders, the during-production check can be combined with the final inspection. For seamless programs, a check after the first knitting run is valuable, because knit program issues affect every piece. The production process page shows where these checks sit in the timeline, and the lead time page explains how they fit within the typical 30-45 day bulk window, confirmed in writing for each program.
What happens when a lot fails
A failed inspection is a decision point, not the end of the order. The common options are:
- The factory sorts the full lot, repairs or replaces defective pieces, and the lot is re-inspected.
- The buyer accepts the lot with an agreed concession, if the defects are cosmetic and the timeline matters more.
- The specific style or color is held back while the rest of the shipment proceeds.
Who pays for re-inspection and how much time a rework adds should be agreed before production, along with the AQL levels themselves. These points belong in the purchase terms, not in a phone call after the report arrives.
Reading an inspection report
A useful report lists the sampling plan used, the sample drawn by color and size, every defect found with its class and a photo, the measurement results against tolerance, and a clear pass or fail by class. A report that says only "passed" without photos and counts does not give you enough to decide anything if a customer later complains.
Keep each report with the approved sample record. On reorders, compare defect patterns: if the same major defect appears twice, the fix belongs in the tech pack or the process, not in another round of sorting.
How we use AQL
We coordinate final inspection with the partner factory and agree the sampling plan and defect classification with you before production, as part of the quality control process. If you are screening factories as well, the factory vetting checklist covers what to ask about in-house inspection. To set up a program with an inspection plan from the first order, send the desk your styles and quantities.