---
title: "Workwear Tech Pack Template: The 12 Sections Factories Need"
url: https://haiyuanworkclothes.com/blog/workwear-tech-pack-template/
date: 2026-10-09
modified: 2026-10-09
author: "HAIYUAN Workwear Manufacturer"
description: "A workwear tech pack needs twelve sections: technical drawings, measurements with tolerances, bill of materials, construction and stitch details, colour references, trim specifications, decoration placement, labelling and packaging, certification requirements,..."
categories:
  - "Blog"
tags:
  - "tech pack template apparel"
image: https://haiyuanworkclothes.com/wp-content/uploads/workwear-tech-pack-template.webp
word_count: 1534
---

# Workwear Tech Pack Template: The 12 Sections Factories Need

**A workwear tech pack needs twelve sections: technical drawings, measurements with tolerances, bill of materials, construction and stitch details, colour references, trim specifications, decoration placement, labelling and packaging, certification requirements, quality standards, size grading and the delivery schedule. Factories that receive all twelve usually produce an approvable sample in one round; factories that receive a sketch and a price target usually need three.**

## Key takeaways

- **The tech pack is the specification.** Everything you later argue about traces back to it.
- **Twelve sections, one document.** Missing any of them moves the ambiguity into production.
- **Measurements need tolerances**, or the factory cannot tell pass from fail.
- **You do not need a designer.** A spreadsheet, a flat sketch and photographs are enough.
- **Approve the pack like a contract**, dated and signed by both sides.

## 1. What a tech pack is, and what skipping it costs

A tech pack (technical pack, tech sheet or specification sheet) is the document that tells a factory exactly what to make. It contains drawings, measurements, materials, construction, branding, packaging and compliance requirements in a form a production team can follow without interpretation.

| Without a tech pack | With a tech pack |
| ------------------- | ---------------- |
| Three or four sample rounds, each 7–15 days | One or two sample rounds |
| Fabric and trims chosen by the factory | Specified by you, with alternatives named |
| Measurement disputes at delivery | Tolerance-based acceptance, decided in advance |
| Certification surprises | Compliance requirements stated up front |
| Price changes as the specification drifts | Price quoted against a fixed specification |

## 2. The twelve sections

| # | Section | What it contains | Who uses it |
| --- | ------- | ---------------- | ----------- |
| 1 | Technical drawings | Front, back and detail flats with annotations | Pattern and sample room |
| 2 | Measurements and tolerances | Measurement table by size with ± tolerances | Pattern, QC, inspection |
| 3 | Bill of materials | Every component with reference and quantity | Purchasing and costing |
| 4 | Construction and stitching | Seam types, stitch density, reinforcements | Sewing floor |
| 5 | Colour references | Pantone TCX codes plus trim and thread references | Mill, trim supplier, decorator |
| 6 | Trim specifications | Zips, tape, elastic, buttons with brands or equivalents | Purchasing |
| 7 | Decoration placement | Logo positions, sizes, methods and colours | Decorator |
| 8 | Labelling and packaging | Care, content, size labels, polybags, cartons | Finishing and logistics |
| 9 | Certification | Standards, classes and test requirements | Compliance and QC |
| 10 | Quality standards | AQL level, defect definitions, inspection points | QC and third-party inspector |
| 11 | Size grading | Base size, grade rules and the full size range | Pattern room |
| 12 | Delivery schedule | Quantities, size breakdown, dates, split shipments | Production planning |

## 3. Section 1: technical drawings

Flats are line drawings of the garment laid flat, front and back, with callouts for every feature. They do not need to be beautiful; they need to be complete.

| Drawing element | Why it matters |
| --------------- | -------------- |
| Front and back flats | Shows panel layout, pocket positions and closures |
| Detail callouts | Cuff, collar, zip ends, pocket construction, tape layout |
| Stitch callouts | Topstitching distance and stitch type |
| Reference photograph | The fastest way to communicate fit and proportion |
| Dimensions on the drawing | Pocket size, tape width, logo placement |

## 4. Section 2: measurements and tolerances

Example measurement table for a work jacket, base size L. Every point needs a value and a tolerance.

| Point | How it is measured | Value (L) | Tolerance |
| ----- | ------------------ | --------- | --------- |
| Chest, 2.5 cm below armhole | Flat, seam to seam | 62 cm | ±1.0 cm |
| Shoulder width | Seam to seam across the back | 50 cm | ±0.5 cm |
| Sleeve length from shoulder | Shoulder seam to cuff edge | 64 cm | ±0.8 cm |
| Body length from high point shoulder | HPS to hem | 72 cm | ±1.0 cm |
| Cuff opening, relaxed | Flat, edge to edge | 12 cm | ±0.5 cm |
| Collar height at centre back | Seam to top edge | 8 cm | ±0.3 cm |

## 5. Section 3: bill of materials

| Component | Specification | Quantity | Notes |
| --------- | ------------- | -------- | ----- |
| Shell fabric | 65/35 poly-cotton, 260 g/m², twill | 1.6 m | Pantone 19-4019 TCX |
| Pocketing | Poly-cotton 120 g/m² | 0.3 m | Contrast or matching |
| Main zip | YKK nylon, 5 mm, two-way | 1 | Length 65 cm |
| Reflective tape | Certified, 50 mm, commercial grade | 2.4 m | Certificate required |
| Thread | Polyester core spun, 40/2 | 1 set | Colour matched to shell |
| Main label | Woven, brand and size | 1 | Position specified |
| Care label | Printed, multilingual | 1 | Content and origin per market |
| Polybag | LDPE, with warning where required | 1 | Marketplace specification |

## 6. Section 4: construction and stitching

| Detail | Specification | Why it is written |
| ------ | ------------- | ----------------- |
| Stitch density | 10–12 stitches per 2.5 cm | Controls seam strength and appearance |
| Main seam type | Five-thread overlock or double-lock | Durability under load |
| Reinforcement | Bar tacks at pocket corners, belt loops and crotch | The most common failure points |
| Topstitching | 3 mm from the edge, matched thread | Appearance consistency |
| Bartack length | 8–10 mm, 28 stitches | Standard acceptance reference |
| Seam allowance | 10 mm, pressed open or flat-felled | Affects fit after alteration |

## 7. Sections 5 and 6: colour and trims

| Element | Reference to write | Notes |
| ------- | ------------------ | ----- |
| Shell colour | Pantone TCX code | Lab dip approval required |
| Contrast fabric | TCX code | Approve against the shell |
| Reflective tape | Certified grade and width | Certificate and after-wash data |
| Zip | Brand, type, length, colour | Name an equivalent to avoid delay |
| Elastic | Width, heat resistance, colour | Supplied by brand or equivalent |
| Embroidery thread | Thread card code | Closest match to the fabric colour |

## 8. Sections 7 to 9: decoration, labelling and certification

| Section | What to state |
| ------- | ------------- |
| Decoration placement | Method, position, measured distances, logo size in mm, colours, and the tape clearance rule on hi-vis garments |
| Labelling | Woven main label, size label, care and content label with the required languages, plus origin information |
| Packaging | Polybag, hang tag, carton dimensions, carton marks, pieces per carton, assortment per carton |
| Certification | Standard, class or performance code, the market, and who pays for testing |
| Compliance markings | Where the standard, class and manufacturer information is printed on the garment |

## 9. Sections 10 to 12: quality, grading and delivery

| Section | What to state | Why |
| ------- | ------------- | --- |
| Quality standard | AQL 2.5 major, 4.0 minor, zero critical; critical defect examples listed | Turns quality into a measurable acceptance criterion |
| Inspection points | Fabric, cutting, in-line, end-of-line, final random | Defines where defects are caught |
| Size grading | Base size plus grade increments per point, and the full size range | Prevents fit drift across sizes |
| Delivery schedule | Quantities by size and colour, split delivery dates, destination | Drives production planning and your buffer |

## 10. Building a tech pack without a designer

- **Start from a garment you already own.** Photograph it flat, front and back, and measure the key points.
- **Draw or trace the flats.** Simple line drawings in any vector tool, or clean photographs with annotations.
- **Build the measurement table in a spreadsheet.** One row per measurement point, one column per size.
- **List every material.** Fabric, trims, labels and packaging, each with a reference or a named equivalent.
- **Write the construction notes in plain sentences.** "Five-thread overlock on side seams, bar tack at pocket corners" is enough.
- **Attach the placement and packaging pages.** These are the two most commonly forgotten sections.
- **Sign and date the final version.** Any change afterwards becomes a numbered revision.

## 11. Common mistakes

- **No tolerances.** A measurement without one cannot be accepted or rejected.
- **Unnamed trims.** "Quality zip" produces whichever zip is cheapest that week.
- **Missing decoration and packaging pages**, which are then decided by the factory.
- **Certification added late**, after the sample has been approved on a different construction.
- **Unversioned edits.** Two teams working from two versions of the pack is a production error.
- **Sending only a sketch.** It communicates the idea, not the specification.

## 12. Frequently asked questions

### What is a tech pack in apparel manufacturing?

A tech pack is the technical specification for a garment: drawings, measurements with tolerances, materials, construction, branding, packaging, certification and delivery requirements, in a form the factory can produce from without interpretation.

### How many sections should a workwear tech pack have?

Twelve: drawings, measurements, bill of materials, construction, colour references, trims, decoration placement, labelling and packaging, certification, quality standards, size grading and the delivery schedule.

### Do I need a designer to make a tech pack?

No. A reference garment, clear photographs, a measurement spreadsheet and written construction notes are enough for most workwear programmes. Most of the value comes from completeness, not artwork quality.

### What do you mean by tolerances in a measurement table?

Each measurement point carries an acceptable range, such as ±1.0 cm on chest width. Without that range, an inspector cannot determine whether a garment passes or fails.

### How detailed should construction notes be?

Specific enough to be checked: stitch density, seam type, reinforcement points and topstitch distance. "Stitch well" is not a specification; "10–12 stitches per 2.5 cm, bar tack at pocket corners" is.

### Should the tech pack include packaging?

Yes. Polybags, hang tags, carton dimensions, carton marks and assortment per carton belong in the pack, because packaging affects both cost and compliance, especially for marketplace sales.

### How often should a tech pack be updated?

Every time the specification changes, with a revision number and date. Keep one master version and treat any deviation as a new revision rather than an email instruction.

### Can a factory build a tech pack for me?

Many will draft one based on your sample, and that is a reasonable starting point. The critical step is your review and sign-off, because the specification has to reflect what you intend to sell.

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