If you were building a house, you would not expect the builder to work from a rough sketch. You would need a set of drawings, specifications and construction details that explain where everything goes, how it is built, what materials are used and how the finished building should come together.
A tech pack does a similar job for a product.
In simple terms, a tech pack is the blueprint for how a product should be made. For bags, luggage, clothing, outdoor equipment and other soft goods, it brings together the drawings, dimensions, materials, trims, construction details and manufacturing notes that a factory needs to quote, sample and produce the product properly.
It is not always a beautiful document. It is often practical, technical and highly detailed. But it plays a critical role in turning a product idea into something that can be manufactured consistently.
At Mouse Design, we see a tech pack as far more than a PDF of drawings. It is part of the product development process. It captures the thinking, decisions and detail that sit between an idea, a prototype and a production-ready product.
One of the biggest misunderstandings around tech packs is that they are just a document you create at the end of the design process.
In reality, a good tech pack develops alongside the product. Early in the project, it may be fairly simple: enough to explain the concept, show the product direction and help a factory give an initial view on feasibility or cost. As the product is designed, prototyped, tested and refined, the tech pack becomes more detailed.
By the time a product is ready for sampling or pre-production, the tech pack should explain the product clearly enough for a manufacturer to understand what is required, what is critical, and where they may have room to suggest the most efficient production method.
That balance is important. A strong tech pack should define the details that matter, but it should not necessarily remove all factory input. Good manufacturers can often suggest better ways to construct a product, reduce labour, improve durability or make production more efficient. The tech pack should create a clear starting point for that conversation.
Without that clarity, the factory has to make assumptions. Sometimes those assumptions are harmless. Other times, they affect the performance, cost, appearance or durability of the final product.
The contents of a tech pack will vary depending on the product and stage of development, but for bags, luggage and soft goods, it will usually include:
The aim is not just to show what the product looks like. The aim is to explain how it should be made.
This is especially important when speaking to multiple factories. If every factory is quoting from a different level of information, the quotes are not truly comparable. A clear tech pack gives each supplier the same starting point, helping you compare cost, capability and approach more accurately.
It also helps protect the design intent. If a product has specific performance requirements, load-bearing areas, material choices or construction details, those need to be documented. Otherwise, the factory may make decisions that suit their process but do not suit the product.
Soft goods tech packs are different from many hard goods specifications because fabric behaves differently from rigid materials.
A sheet of fabric does not naturally hold a precise three-dimensional form. It needs to be shaped through pattern pieces, seams, linings, foams, webbing, bindings, reinforcements and construction methods. Small decisions can have a major effect on how the product performs
.
For example, the type of stitch used in a high-load area matters. On a rucksack strap attachment or a piece of luggage under repeated stress, a straight stitch may not always be the right answer. A zigzag stitch, bar tack or combination of stitch types may be needed to allow controlled movement, distribute load or prevent seam failure.
The same applies to seam allowances, reinforcement patches, foam inserts, zip positions and binding details. These are not just manufacturing details. They affect the product’s strength, usability, comfort, appearance and lifespan.
This is why a tech pack for sewn products cannot be treated as a flat visual document. It has to explain how two-dimensional materials become a three-dimensional product that performs in the real world.
For brands developing bags, luggage, outdoor equipment or textile products, a strong tech pack is a key part of moving from concept to manufacture.
A concept drawing is valuable, but it does a different job.
A concept sketch or visual shows intent. It explores an idea, communicates a direction and helps the team understand what the product could become. It is deliberately quicker and freer than a full technical specification because it allows ideas to be tested and changed quickly.
A manufacturing-ready tech pack goes further. It explains what is wanted, how the product should work, what details matter and how the design should be interpreted by the factory.
This distinction is important because many products look resolved long before they are ready for manufacture. A visual may show the shape, styling and broad features, but it may not define materials, construction, tolerances, stitching, internal structure, hardware, reinforcement or packaging.
If those decisions are not made before the product goes to a factory, they will still be made by someone. The question is whether they are made intentionally by the design team, or by the factory under time and cost pressure.
A good tech pack helps factories provide more meaningful quotes. They may still want to make a sample before confirming final pricing, but a clear specification allows them to give a more accurate indication of cost, materials, labour and production complexity.
That is essential for testing whether a product idea is commercially viable.
If your business needs to hit a certain retail price, margin or production cost, the tech pack becomes part of the commercial design process. Material choices, construction methods, component selection and packaging can all affect cost. The earlier these details are understood, the easier it is to make informed decisions.
The tech pack also supports sampling. It gives the factory a clear reference point for the first sample, and it allows changes to be documented through each round of development. Photos, mark-ups, comments and revisions can all be fed back into the document until the final approved sample is reached.
In many cases, the tech pack keeps evolving until the gold seal sample is agreed. At that point, it becomes a record of what has been approved and what needs to be repeated in production.
One of the most common mistakes is making the tech pack too simple.
If the document leaves too much open to interpretation, the factory has to fill in the gaps. This can lead to a product that technically follows the brief, but does not match what the client imagined.
Another mistake is asking the factory to solve unresolved design problems. Factories can add huge value, but they may not fully understand the brand, customer, use case or performance requirement behind the product. If too much design responsibility is handed over too early, the brand can lose control of the outcome.
A weak tech pack can also make cost control harder. If key details are undefined, prices may change once the factory understands the true complexity of the product. That can create problems later, especially if launch pricing or margins have already been assumed.
The better route is to develop the product properly, test the right details through prototypes and samples, and use the tech pack to capture the decisions that matter.
At Mouse Design, we do not see a tech pack as a standalone document. We see it as part of the wider journey from idea to production.
At the start of a project, we spend time understanding the client’s business, customer, brand position, target price, performance requirements and manufacturing route. That context matters because a tech pack should not only serve the factory. It should also serve the product, the business and the end user.
For bags, luggage, outdoor products and sewn goods, we can support the full process: concept development, prototyping, technical design, textile pattern development, sample review and design for manufacture. The tech pack then becomes the document that brings those decisions together in a clear, practical format.
A good tech pack helps the client communicate with factories, protect the design intent, manage cost and move towards production with more confidence.
If you have a product idea, an early prototype or an existing design that needs to be made properly, the tech pack is often the point where the idea starts to become commercially real.
Need help turning a bag, luggage or soft goods concept into a manufacturing-ready specification? Speak to Mouse Design about tech pack development, prototyping and design for manufacture.
