A tech pack is the instruction manual for a garment. The clearer it is, the closer the first sample, and the fewer paid revision rounds.
What a factory needs to quote
- Front and back flat sketches
- Fabric: composition, weight in gsm, and the finish or hand you want
- Size range and quantities per style and colour
- Key trims: zips, buttons, drawcords, labels
What it needs to sample
- A measurement spec for the base size, with tolerances. Without tolerances, nobody can say whether a sample passes.
- Construction details: stitch types, seam finishes, rib heights, hem widths, topstitching.
- Colour standards: Pantone TCX codes or physical swatches.
- Labels and packaging: placement, size and care content.
- Reference photos of details from your own samples or existing garments.
The gaps that cause wrong samples
Most problems trace back to the same omissions: no fabric weight, no tolerances, unclear rib or trim specs, and grading left to the factory. Close those and the first sample is usually close.
Only have references? That can be enough to start a conversation. Completing the specification is part of development.