Essential Elements Every Tech Pack Must Include for Fashion Industry Success

Creating a tech pack is a crucial step for any fashion brand aiming to bring designs from concept to production. Many founders underestimate what’s required, thinking a simple sketch will suffice. The truth is, manufacturers need precise, production-ready information to deliver quality garments on time and within budget. This post breaks down the essential elements every tech pack must include, with clear examples to help beginners understand what goes into a successful tech pack.

Detailed technical sketch of a jacket with measurements and fabric swatches

What a Tech Pack Is and Why It Matters

A tech pack is a blueprint for your garment. It communicates your design vision and technical requirements to the factory. Without a complete tech pack, manufacturers can misinterpret your design, leading to costly errors, delays, and wasted materials.

A well-prepared tech pack includes everything a factory needs to produce your garment exactly as you envision it. This includes technical sketches, measurements, materials, construction details, and more.

Technical Sketches

Technical sketches are the foundation of your tech pack. Unlike fashion illustrations, these sketches focus on accuracy and detail rather than artistic flair. They show the garment from multiple angles—usually front, back, and side views—and highlight key design features.

What to include in technical sketches:

• Clear line drawings without colour or shading

• Details like seams, stitching, pockets, zippers, buttons, and trims

• Annotations pointing out special features or construction notes

  
  

Manufacturers rely on these sketches to understand the garment’s shape and design elements. A basic sketch isn’t enough; it must be precise and clear.

Measurements and Size Specifications

Accurate measurements are critical. This section, often called the size spec sheet, lists all the dimensions for each size you plan to produce. It ensures the garment fits as intended.

Key points for measurements:

• Include all relevant points such as chest, waist, hip, sleeve length, inseam, and garment length

• Provide tolerances (acceptable measurement variations)

• Use consistent units (inches or cms)

• Include grading rules if you plan multiple sizes

  
  

For example, a T-shirt tech pack might list chest width, body length, shoulder width, and sleeve length for sizes S, M, L, and XL.

Bill of Materials (BOM)

The Bill of Materials lists every component needed to make the garment. This includes fabrics, trims, labels, threads, buttons, zippers, and any other materials.

What to specify in the BOM:

• Fabric type, weight, and composition (e.g., 100% cotton jersey, 180 gsm)

• Color codes or Pantone references

• Trim details like zipper length, button size, and thread color

• Supplier information if available

  
  

A detailed BOM helps factories source the correct materials and avoid substitutions that could affect quality or appearance. Sometimes this is a separate sheet but sometimes this information is woven throughout the tech pack in different areas.

Construction Details

This section explains how the garment should be assembled. It covers stitching types, seam allowances, finishing techniques, and any special instructions.

Examples of construction details:

• Stitch type (e.g., flatlock, overlock, single needle)

• Seam allowances (e.g., 1 cm or 3/8 inch)

• Reinforcement areas (e.g., bartacks at pocket openings)

• Details on hems, collars, cuffs, and linings

  
  

Clear construction notes prevent misunderstandings and ensure the garment is built to your standards.

Labels and Branding

Labels are small but important. This section specifies the type, placement, and design of all labels and branding elements.

Include:

• Care labels with washing instructions

• Brand labels with logo placement and size

• Hangtags or stickers if applicable

• Label materials and attachment methods (e.g. sewn-in, heat transfer)

  
  

Proper label instructions help maintain brand consistency and comply with regulations.

Colourways

If your garment comes in multiple colours, list all colour options with exact references. Use Pantone numbers or fabric swatches to avoid confusion.

Tips for colourways:

• Include colour names and codes

• Specify which trims or labels change with color

• Provide photos or fabric samples if possible

  
  

This section helps factories prepare for different production runs and maintain color accuracy.

Packaging (Optional but Valuable)

Packaging instructions are often overlooked but can add strong authority to your tech pack. This section details how the finished garments should be packed and shipped.

Packaging details might include:

• Folding instructions

• Polybag size and type

• Hangtags or stickers placement

• Carton dimensions and labeling

  
  

Clear packaging guidelines reduce damage during shipping and improve presentation for retail.

Creating a detailed tech pack is one of the most important parts of developing a fashion product properly because it helps reduce misunderstandings, improve sample quality, minimise costly mistakes and give your factory clear instructions to work from.

The problem is that a lot of first-time founders assume they need to know how to create all of this themselves before they’re “ready” to move forward, and that’s usually where people end up disappearing down months of research, trying to learn Adobe Illustrator, fashion terminology, garment construction and technical specification sheets all at once.

But what if there was a better way?

Most of the founders I work with don’t come to me with polished technical drawings or professionally prepared documents. They come with ideas, Pinterest boards, screenshots, rough sketches, voice notes, fabric inspiration and a vision they don’t quite know how to translate into something production-ready yet.

My role is to take that messy “brain dump” of ideas and turn it into something a factory can actually work from, whether that’s one product you’re trying to bring to life or an entire clothing collection.

Together, we’ll shape the collection strategically, discuss fabrics, construction, fit, product details and manufacturing considerations, and then I’ll go ahead and create the technical designs, tech packs, size specifications and any bespoke prints or graphics needed to prepare your collection for sampling and production.

Because the reality is that a strong tech pack can save you a huge amount of time, money and frustration in the long run. Better communication usually leads to better samples, fewer revisions, fewer misunderstandings and a much smoother production process overall.

So if you’ve reached the stage where you’ve got lots of ideas but you’re struggling to figure out how to turn them into professional tech packs and real products, then this is exactly the kind of thing I help founders with every day.

You don’t need to have everything figured out before getting support and if you'd like a complimentary call to understand how I can help you then click here.

See you in the front row,

Michelle Ramsay - The Fashion Expert®