What a Tech Pack Actually Contains
A complete tech pack includes a flat sketch of the garment (front and back), a full measurement spec by size, fabric details including composition and GSM, trim specifications (thread, labels, hardware, drawcords), construction notes (seam types, stitch counts), colourways, and grading rules across your size range. It's the reference document every department at a factory — pattern, cutting, sewing, QC — works from, so any ambiguity in it becomes an ambiguity in the finished garment.
What Happens Without One
Briefing a factory with reference photos and written notes alone works for simple products, but it forces the factory's pattern team to make judgement calls on fit, proportion and construction that should have been your decisions. Those judgement calls are the single most common cause of a first sample missing the mark — not because the factory did a bad job, but because it was never told the specifics it needed. Every round of "that's not quite right, try again" adds a full sampling cycle to your timeline, which can turn a two-week development process into six.
Measurement Specs Matter More Than the Sketch
A nicely drawn flat sketch matters less than most new brands assume — the measurement spec is what actually controls fit. Chest width, body length, sleeve length, hem opening, and critically, tolerance (the acceptable +/− variance per measurement) are what a pattern maker and QC team actually work from. If you supply a reference garment, have it measured point-by-point rather than relying on a generic size label, since "medium" means different things across brands and even different styles within the same brand.
You Don't Need Design Software to Start
Many new brands assume a tech pack requires specialist software like Adobe Illustrator and a trained pattern technician to produce. In practice, a clear hand-drawn or simply labelled sketch, an accurate measurement table, and honest reference garments or photos are enough for an experienced manufacturer to build a working tech pack collaboratively during development — which is exactly how most first-time private label brands actually start. The key is being specific about fabric weight, fit and trims up front, not having a polished document.
Who Owns the Tech Pack
Once a tech pack is developed, it's worth clarifying ownership explicitly — ideally you, the brand, should retain the final version, since it's what lets you move production between factories later if needed without starting development from zero. A manufacturer confident in its process shouldn't object to sharing the finished tech pack once a style is in production.
Ruhrose's Development Process
Ruhrose works with UK buyers to build or refine a tech pack as part of the sampling process for hoodies, jersey, denim and woven casualwear — whether you're arriving with a finished spec or just a reference garment and a clear idea. Development runs through our Bangladesh-based production team, with sign-off at each stage before moving to bulk.