Pre-production approval is the last gate before bulk. The PP sample is the factory's own statement that they can produce your product at quality, at scale, with the actual production fabric and trims. Approve here and the line runs.

Every decision made over the last eight steps gets locked in this one. Spec, materials, construction, finishing — all confirmed against a sample produced in the production facility, with the production process. Anything ambiguous now becomes a defect at scale.

What it includes

Confirming the PP sample matches the final tech pack at every point of measure. Verifying production fabric and trims are ordered and on-spec. Locking the final tech pack as the canonical version. Issuing written approval (or a final round of comments) to the factory.

Why it matters

A bulk run that goes wrong is the most expensive mistake in apparel. PP approval is the structured pause that catches the issues a sample size can hide. Done deliberately, it protects every unit you'll sell. Done casually, it's where founders find out at delivery what they should have caught here.