What a Tech Pack Actually Is
A tech pack is a complete, production-ready specification document for a single garment. In denim, a thorough tech pack typically includes:
- Flat sketch: front, back, and detail views showing all construction lines, pocket placement, stitching paths, and hardware positions
- Bill of materials (BOM): fabric, thread, zipper, buttons, rivets, labels, back patch, hang tags — each with specifications
- Measurement chart: every point of measure for the sample size, plus grade rules for the full size range
- Construction notes: seam types, stitch density (stitches per inch), bartack positions, hem finish, waistband construction method
- Wash specification: target wash effect, recipe direction, approved wash reference, shade tolerance
- Label and packaging instructions: placement, content, folding, poly bag, carton
A well-made tech pack allows any qualified production facility to produce the garment without needing further conversation about intent. That is its purpose — it removes ambiguity.
When a Full Tech Pack Is Needed
A completed tech pack is necessary in the following situations:
Complex construction or multiple wash zones. If your design includes engineered distressing patterns, localized bleaching, contrast panels, or multi-technique wash sequences, a verbal description or reference photo cannot capture the precision needed. Each zone needs to be mapped, and each technique needs to be specified. Without a tech pack, the sample team is guessing at your intent — and each guess becomes a sample round.
Non-standard pattern elements. Asymmetric pocket placement, unconventional yoke lines, curved seam details, or integrated functional elements (hidden pockets, adjustable waistbands) all require technical documentation. A photo of a similar garment is not sufficient because the construction method behind the visual is not visible.
Multi-supplier quoting. If you are sending your specification to more than one potential development partner for comparison, a tech pack ensures that every party is quoting and sampling against the same document. Without it, each facility interprets your reference differently, and you end up comparing samples that were never built to the same standard.
Internal approval workflows. Brands with multiple stakeholders — a designer, a product manager, a founder — need a version-controlled document that records what was approved at each stage. A tech pack serves as the single source of truth that prevents internal miscommunication from cascading into sample errors.
When Reference Images Are Enough to Start
For many brands — especially creator-led labels, first-collection startups, and DTC teams entering denim for the first time — a reference image or sketch is a practical and legitimate starting point.
A reference-based start works when:
- You are developing a relatively standard silhouette (straight leg, wide leg, classic 5-pocket) with modifications rather than inventing a new construction
- You have a physical garment or a clear photo that represents 80% or more of what you want, and your changes are specific and articulable (“raise the rise by 1 inch, change to button fly, keep the back pocket shape”)
- You are working with a development team that will translate your inputs into a sampleable specification through discussion — not just receive a document and execute
- Your first sample round is a development sample (to explore direction), not a pre-production sample (to lock final spec)
The key distinction: a reference-based start is not the same as a vague start. “I want something like this photo” plus organized notes on fit, fabric, and wash is a workable brief. “I want some jeans, you figure it out” is not.
What a Development Team Can Help Organize
When you start without a tech pack, the development team’s role is to take your inputs — photo, sketch, notes, reference garment — and guide a structured conversation that converts them into a sampleable specification.
What this typically looks like in practice:
Fit direction discussion. Based on your reference image, the team will ask clarifying questions: What rise height are you targeting? How much room do you want in the thigh? What leg opening are you aiming for? If you send a physical counter sample, they will measure it and propose a measurement spec for your review.
Fabric recommendation. If you describe your target — “midweight, slight stretch, soft hand, indigo” — the team can recommend specific fabric options from available mill stock that match your description. You choose; they narrow the field.
Wash direction clarification. You provide a photo or physical reference of the wash tone you want. The team translates that into wash technique language — enzyme level, stone load, bleach or no bleach, softener treatment — and confirms the direction with you before proceeding.
Trim and hardware organization. If you have brand assets (logo, label artwork), the team helps you match them to physical trim options. If you do not have brand assets yet, placeholder trims can be used for the development sample and replaced later.
The boundary is clear: a development team guides the technical translation, but certain decisions must come from you. The team cannot decide your fit intent, your wash preference, or your price tolerance. Those are brand decisions, not production decisions.
What Cannot Be Skipped — With or Without a Tech Pack
Regardless of whether you start with a complete tech pack or a single reference photo, three categories of information must be resolved before a meaningful sample can be cut:
1. Measurements for the sample size. Either you provide them, or you send a physical counter sample that can be measured. Without measurements, the sample is a guess. A guess might look right in a photo but fail on a body.
2. Fabric direction. At minimum: target weight (lightweight, midweight, heavyweight), stretch content (rigid, comfort stretch, power stretch), and base color. The specific mill and article number can be finalized during development, but the category must be defined. Sampling in the wrong fabric category wastes everyone’s time — a wash developed on rigid 14 oz denim tells you nothing about how it will look on stretch 10 oz.
3. Wash direction. At minimum: a photo or physical sample showing the tone, fading level, and hand feel you want. Without a wash reference, the sample team will default to a standard rinse or one-wash, and you will spend an entire sample round just getting to the wash starting point you should have communicated at the beginning.
Everything else — trim details, label artwork, packaging instructions, size grading — can use placeholders for the first development sample and be finalized progressively before the pre-production sample. For a full list of items to prepare, see the companion guide: What to Prepare Before Denim Sampling.
The Difference Between a Tech Pack and a Development Brief
It helps to think of these as two different documents serving two different stages:
A development brief is what you bring to start sampling. It contains your reference, your direction, and your constraints. It is organized but intentionally incomplete — because the purpose of the first sample round is to explore and refine.
A tech pack is what exists by the time you approve the pre-production sample and move to bulk. It contains every finalized detail — locked measurements, confirmed fabric, approved wash recipe, final trims, completed label artwork, graded size chart, packaging spec. It is the handoff document between development and production.
The mistake many first-time brands make is believing they need the second document before they can start the first stage. They spend weeks or months trying to complete a tech pack in isolation — choosing stitch types, specifying bartack positions, writing wash recipes — without the hands-on feedback that only comes from seeing and touching an actual sample. The result is often a tech pack full of decisions that need to be revised the moment the first sample arrives.
A more efficient path: start with a development brief, use the first sample round to test your direction, and build the tech pack progressively as decisions are confirmed through physical samples.
How to Organize a Development Brief That Works
If you are starting without a tech pack, organize your inputs into these five blocks before reaching out:
Block 1 — Visual reference. One clear photo or sketch, front and back. Annotate it: circle what you want to keep, mark what you want to change, label the details that matter most to you. See What to Prepare Before Denim Sampling for photo guidelines.
Block 2 — Fit notes. Target rise, target leg shape, intended wear position, any specific fit priorities (“must be comfortable sitting,” “needs to look good with boots,” “relaxed through thigh but tapered below knee”). If you have a physical garment that fits the way you want, say so — and be ready to send it.
Block 3 — Fabric and wash direction. Weight preference, stretch preference, wash tone. A photo of the wash you are targeting. If you have a physical garment with the right wash, that is the strongest reference you can provide. For an overview of fabric and wash options, see Washes, Fabrics & Trims.
Block 4 — Trim and brand notes. If you have a logo, label artwork, or hardware preferences, include them. If you do not, say “trims not finalized yet — will confirm before PP sample.” This is normal and expected.
Block 5 — Scope and timeline. How many styles are you developing? What is your target quantity range per style? When do you need to launch? This context helps the development team recommend the right approach for your situation. For more on how quantity affects development decisions, see Low MOQ Denim Production: What to Confirm First.
When to Convert a Brief Into a Full Tech Pack
The right moment to formalize your development brief into a complete tech pack is after your development sample has been reviewed and your direction is confirmed. At that point:
- Measurements have been tested on a physical sample and adjusted
- Fabric has been seen and felt in garment form
- Wash has been evaluated under real light, not just on screen
- Construction details have been validated — or revised — based on what actually works
This is when every decision gets locked into a formal tech pack that will control the pre-production sample and, ultimately, bulk production. If you need guidance on what to check before approving a sample, see How to Review a Denim Sample Before Bulk Production.
Trying to finalize a tech pack before this point means you are locking decisions that have not been tested. Refusing to formalize a tech pack after this point means you are entering production without a controlled specification — and that is where consistency problems begin.
Where to Start
SkyKingdom works with growth-stage brands that range from first-time founders with a sketch to scaling labels with full tech pack libraries. If you are unsure whether your current inputs are enough to begin denim development, send what you have and the team will advise on next steps.
