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Tech Pack Design for Clothing Brands: Complete Technical Blueprint Guide

A tech pack is the technical document that turns a design idea into a garment a factory can actually produce. Without one, even simple pieces get lost in translation between designer and manufacturer.

What a Tech Pack Should Include

  • Flat sketches (front, back, and any relevant detail views)
  • A complete measurement spec, or points of measure, for every size in your run
  • Fabric and trim details, including GSM, composition, and supplier references
  • Construction notes covering seams, stitching type, and finishing
  • Colorways and any artwork or print placement files

Building the Measurement Spec

Your point-of-measure (POM) chart is the most important page in the pack. It lists exact measurements — chest, length, sleeve, hem — for every size, along with acceptable tolerance (usually ±0.5–1 cm depending on the garment).

Why Tolerances Matter

A tolerance that’s too tight will get flagged (and cost you) at quality control; too loose, and your garments will fit inconsistently across a production run. Agree on tolerances with your factory before bulk production, not after.

Revisions Are Normal

Expect at least one or two rounds of tech pack revisions after your first fit sample. Building this into your timeline from the start keeps a normal, healthy back-and-forth from turning into a missed launch date.