Apparel Production Control (Shrinkage, Dye, GSM)

The bulk run is where profits die in apparel. Shrinkage, dye drift, and size drift cause 80% of returns. Lock specs with controls.

Why This Matters

Factories often switch to cheaper, unstabilized fabric for bulk orders. Without shrinkage tolerance and size grading controls, your 'Large' will fit like a 'Small' after one wash.

What to ask suppliers

Q1
What is the shrinkage test method and result history?
Q2
Can you provide lab dips and dye lot controls?
Q3
Who measures sizes and how often during production?
Q4
Can we add a no-substitution clause to PO?

Red Flags

“Bulk will be similar to sample” with no tolerance agreement.
Refuses lab dips / pushes “close enough”.
Won’t provide measurement table in writing.
Avoids discussing shrinkage testing.

Step-by-Step Verification Checklist

1
Define fabric composition + GSM tolerance (e.g., 240gsm ± 5%).
2
Set shrinkage tolerance after wash (e.g., ≤ 3%).
3
Require color standard: Pantone + lab dips approval.
4
Define measurement points per size + tolerance table.
5
Require pre-production sample signed/stamped as “Golden Sample”.
6
Specify stitching, seam allowance, and critical construction details.
7
Add “no substitution” clause for fabric and trims.
8
Require inline QC photos at 20% / 50% / 80% production.

Supplier Message Template

Copy Paste

Hi [Supplier],

QC Requirements:
1. Fabric: [Insert GSM] +/- 5%.
2. Shrinkage: Max 3% (AATCC Test Method).
3. Sizing: Must match Tech Pack within +/- 1cm tolerance.

We require a signed Gold Sample before bulk cutting.

What to send me to start

Tech pack or reference sample photos
Fabric target (composition/GSM) + size chart
Target quantity + market

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Apparel Production Control: Prevent Fabric Shrinkage, Dye Drift, and Size Inconsistency