Porto, Portugal
41.15° N · 08.62° W
Our approach

Most tech packs get sent back at least once, ours are built not to.

Category checklists, a factory-ready format, and revisions included, so the first version is the one your factory actually uses.

Built
To
Spec
Tech packs for fashion brands that care about getting it right
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< 2h
Average reply time
100%
Emails answered personally
$0
Cut of your production, ever
2021 Today

From a small studio to one that's supported 500+ brands

In 2021, GarmentSpec started as a small studio helping independent labels turn sketches into specs a factory could actually use, instead of guessing their way through construction details after the fact.

The focus hasn't changed since: a checklist built for each garment category, a factory-readable format, and revisions included, delivered in days, not weeks.

500+
Brands supported
654
Tech packs delivered
12
Garment categories covered

Heads up: "12 categories" doesn't match the 4-category system (Denim, Graphic & Print-Led, Activewear, Tailored & Structured) used on 8 other files across this site, see the top comment for the full list.

Milestones

Seven years, one mission

2019
Started as a fashion brand ourselves

Got burned by bad specs and factories that couldn't read them. Took notes.

2020
First spec checklist shared publicly

A free one-page checklist for getting a tech pack right, shared with the fashion community before GarmentSpec was even a paid service.

2021
Flat pricing, not a calculator

Brands wanted to know the cost before reaching out, so we published $299 / $249 / $499 instead of quoting case by case.

2023
Tech packs become the whole focus

One job, done properly. No mixed services pulling in different directions.

2025
654 tech packs delivered

500+ brands and counting.

2026
Categories expand to 12

Full category-specific checklists across a broader range of garment types, not just the original four.

Behind the scenes

The details a spec has to get right

What we stand for

Three rules we never break

No commission, ever

One flat fee, paid by you upfront. No cut of what your factory charges for the run, no matter which factory you use.

Founder-first answers

If a design won't translate well to production, we'll say so before you pay for a revision round. We'd rather lose a client than ship a spec that doesn't work.

Any batch size, same spec

The spec doesn't change based on your order size. One sample or a full collection gets the same category checklist and the same attention.

A closer look

What goes into getting a spec right

Construction detail worth paying attention to

Reference photos from real garment construction. Drag horizontally to explore, click any tile to open the full image.

Pattern development
Pattern Development
First prototype review
Print placement detail
Print Placement
Precision before the first cut
Textile craft detail
Textile Craft
Portuguese textile heritage
Construction detail
Construction Detail
Stitch and seam precision
Spec verification against technical flats
Spec Verification
Flats checked against the sample
Hand finishing detail
Hand Finishing
Worth a construction note
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Based in Porto, working worldwide

Fashion brands in 30+ countries send us their specs

From a studio in Porto, we work with independent labels and small brands across Europe, the Americas, Asia, and Oceania. Specs come in, tech packs go out, no factory floor required.

Working with fashion brands across Europe, the Americas, Asia, and Oceania.

/ our process

What goes into every tech pack we build

Pattern development table Construction detail on a denim seam Full spec sheet with measurements Technical flats for review Print placement and materials detail
Step 01
Spec Development
First draft, from sketch to spec
Real humans, fast replies

Talk to a real person in Portugal.

Reply within 2 hours. No bots, no sales pipelines, no nonsense.

No commitment. We'll tell you honestly if your spec isn't ready yet.

How we work

A small studio in Porto building tech packs for independent labels and small brands. We review every brief by email, build the spec to the category's checklist, and hand it back factory-ready, revisions included.

Spec Intake

You send sketches, references, or a rough idea by email. We turn it into a structured brief before drafting begins.

Category Checklist

Every garment type, denim, activewear, tailored, and print-led, gets its own checklist, so nothing gets missed.

Construction Detail

Seam types, stitch detail, and finishing notes are called out precisely, not left for the factory to guess.

Revision Rounds

2 to 3 rounds included with every order. We don't call it done until it reads clean.

Factory-Ready Handoff

Delivered in a format any factory can work from, yours outright, no back-and-forth to clarify the basics.

Fast Turnaround

Most tech packs ship in 3 to 5 business days, not weeks.

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Brands supported

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Tech packs delivered

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Years in the industry

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Reply time

Ready to get your spec built?

Send us your brief and we'll reply within 2 hours with an honest answer on fit.

Get in contact