Tech Pack Essentials: The Document That Decides Sampling Speed

A complete tech pack removes almost all of the ambiguity that causes repeated sampling rounds, which is where launch delays begin.

This guide explains the underlying principle, the numbers that matter and the checks that keep results consistent.

Core content of a tech pack

Technical flats, measurement chart with tolerances, fabric and trim specification, colourways, artwork and packing instructions.

Brands that treat it as a design input rather than a purchasing detail consistently achieve better sell-through.

Every measurement needs a defined point of measurement and a realistic tolerance, plus grading rules for the full size range.

Fix the limits for the whole size range, not only for the middle size, as grading changes the numbers involved.

Fibre content, GSM, stretch values, finishes and trim codes should be stated precisely, with approved suppliers named.

Review machine maintenance schedules, because worn parts change results gradually and are easily missed.

Print files, colour references, placement dimensions and print technique belong in the same document.

Where results are borderline, decide in advance whether to accept, re-test or negotiate, rather than arguing later.

Missing care labels, packing methods and test requirements cause most late-stage changes in development.

Plan the calendar with the approval steps in mind, since late approvals delay production regardless of capacity.

Handled early, the requirement costs little and protects the launch date; handled late, it becomes an argument about responsibility.