Pillar guide
Apparel Quality Control Explained
How apparel quality control actually works, from AQL sampling levels to measurement tolerances and what to demand in an inspection report.
Quality control is not a final inspection. It is a chain of checkpoints that starts with fabric arriving at the factory and ends with cartons sealed for export.
The four inspection stages
- Fabric and trim inspection — checks GSM, shade continuity, shrinkage and defects before cutting
- Inline inspection — at 15-25% of production, catching construction errors while they can still be fixed
- Pre-shipment inspection — at 80% packing, the formal accept or reject decision
- Container loading check — verifies carton counts, markings and load condition
Defect classification
- Critical — unsafe or unusable; broken needle fragments, harmful chemicals. Zero tolerance.
- Major — visible to a customer and likely to cause a return; broken stitching, off-shade panels, misplaced logos.
- Minor — cosmetic, unlikely to trigger a return; slight loose thread, faint crease.
Understanding AQL sampling
AQL tables translate lot size into a sample size and an accept/reject number. For a 2,000-piece lot at General Inspection Level II, the sample is 125 pieces; at AQL 2.5 you may accept up to 7 major defects and must reject at 8.
Measurement checks
Sample across the full size range, not just the mid size. Grading errors are the single most common source of returns in first production runs.
What a good inspection report contains
- Photographs of every defect found, with counts
- Full measurement table against the approved spec
- Carton and barcode verification
- Workmanship, wash and colour-fastness observations
- A clear pass, fail or conditional pass verdict
Building your own QC checklist
Keep it short enough that it gets used. Ten to fifteen lines covering fabric, colour, measurements, stitching, branding, labelling, trims, packing and carton marking will catch the vast majority of real-world problems.
Agree your quality standard in writing before production starts, not after the goods are packed. Request a quote at beltasports.com to discuss sampling, in-line checks and final inspection for your order.
Related reading
Planning a brand from scratch? Start with our pillar guide: How to Start a Sportswear Brand in 2027.
Go deeper: AQL inspection explained — what actually passes or fails a sportswear order
Frequently asked questions
- What does AQL 2.5 mean?
- AQL 2.5 is an acceptable quality limit allowing up to 2.5% major defects in a statistically drawn sample. It is the most common standard for apparel major defects, usually paired with AQL 4.0 for minor defects.
- When should inspections happen?
- Run an inline inspection at roughly 20% completion so problems can still be corrected, and a pre-shipment inspection at 80% carton packing.
- What measurement tolerance is normal for apparel?
- Typically plus or minus 1cm on body widths and lengths, and plus or minus 0.5cm on smaller details such as cuffs and collars. Tolerances must be stated in the tech pack.
About the author
Ayesha Rahman
Product Development Lead, Belta Sports
Ayesha works with emerging activewear labels on fit, fabric selection and production readiness, and has taken more than eighty first-time brands through their debut run.