A tech pack is the blueprint your factory builds from. Measurements at base size, points of measure, materials and trims, construction callouts, grading rules — everything they need to make your sample right the first time, without guessing.
A weak tech pack costs you in samples and revisions. A clear one cuts rounds, protects your timeline, and turns a vague "yes, we can make this" into an actual price you can plan against.
What it includes
A complete tech pack pairs the fashion flats with a graded spec sheet, points-of-measure callouts, a bill of materials (fabric, trims, labels, hangtags), construction notes (stitch types, seam finishes, edge treatments), and any sketches the factory needs to interpret a detail.
Why it matters
The tech pack is what gets sent to factories for quoting and sampling. Every gap or ambiguity in it becomes a guess the factory has to make — and they will guess in the direction that's fastest for them, not best for you. The work is in leaving nothing to guess.