How to Create a Tech Pack for a Custom Jacket | Complete Guide
Learn how to create a tech pack for a custom jacket, including technical drawings, measurements, fabrics, BOM, construction, branding, grading, QC and packaging.
Learn how to create a tech pack for a custom jacket, including technical drawings, measurements, fabrics, BOM, construction, branding, grading, QC and packaging.
Creating a detailed tech pack is one of the most important steps when developing a custom jacket for manufacturing. A good jacket tech pack turns a creative idea, sketch, or reference garment into clear technical instructions that a clothing manufacturer can understand and reproduce.
A professional custom jacket tech pack normally includes technical drawings, garment measurements, construction details, fabric specifications, color references, trims, hardware, labels, branding instructions, artwork, grading information, packaging requirements, and quality-control standards.
For clothing brands, startups, designers, and private-label businesses, a well-prepared tech pack can reduce communication problems, improve sampling accuracy, speed up product development, and create a reliable reference for bulk jacket production.
A custom jacket tech pack should include all the technical information a manufacturer needs to develop and reproduce the garment accurately.
At minimum, include:
Jacket technical drawings
Front and back views
Side or inside views when necessary
Jacket measurements
Size specifications
Fabric composition
Fabric weight or GSM
Lining specifications
Interlining or insulation
Color references
Seam and stitching details
Pocket construction
Zipper and hardware specifications
Collar, cuff, and waistband details
Labels and branding
Embroidery or print artwork
Placement measurements
Garment construction notes
Measurement tolerances
Grading requirements
Packaging instructions
Quality-control requirements
Sample comments and revisions
The simplest rule is:
If a detail affects the appearance, fit, construction, performance, or production cost of the jacket, it should be documented in the tech pack.
A tech pack should eliminate guesswork between the designer and the jacket manufacturer.
A jacket tech pack is a technical production document that communicates how a specific jacket should be developed and manufactured.
It converts a design concept into measurable manufacturing instructions.
A jacket tech pack can communicate:
What the jacket should look like
How it should fit
Which fabrics should be used
How the jacket should be constructed
Where components should be placed
What hardware should be used
Where logos should appear
How measurements should be controlled
How different sizes should be graded
How the finished jacket should be inspected
How the garment should be packaged
A manufacturer should be able to review the document and understand the product without having to guess what the designer intended.
Custom jacket tech pack with technical front and back drawings
A fashion sketch communicates the creative direction.
A tech pack communicates the manufacturing requirements.
A fashion sketch may show:
Oversized black bomber jacket with a large back graphic.
A technical package should clarify:
Oversized bomber jacket, specified body measurements, rib construction, shell fabric specification, lining specification, zipper type, pocket dimensions, rib dimensions, logo placement, print dimensions, seam construction, and tolerance requirements.
Both are useful, but they serve different purposes.
A tech pack is not the same thing as a sewing pattern.
A pattern provides the physical pattern pieces used to cut the garment.
A tech pack provides the specifications and instructions used to develop and manufacture the product.
The two documents often work together during professional garment development.
Related: Tech Pack Jacket Manufacturer
Jackets contain many components.
A single design may include:
Shell fabric
Lining
Interlining
Insulation
Ribbing
Zippers
Snaps
Buttons
Pockets
Labels
Embroidery
Printed artwork
Drawcords
Elastic
Hardware
Without written specifications, different people may interpret the design differently.
The manufacturer uses the tech pack as a development reference when creating the first sample.
If measurements, fabrics, construction, and branding are clearly documented, the sample can be compared against objective requirements rather than personal interpretation.
The tech pack should not only be used for sampling.
After the sample is approved, the same technical information can become a production reference for:
Small-batch manufacturing
Bulk jacket manufacturing
Repeat orders
New colorways
Seasonal collections
Private-label production
This is particularly important when a successful jacket is reordered months later.
Before creating technical specifications, define exactly what you are making.
Start with:
Jacket category
Target customer
Gender
Intended fit
Intended season
Intended use
Price positioning
Fabric direction
Branding direction
Target retail market
Possible jacket categories include:
Bomber jackets
Varsity jackets
Denim jackets
Leather jackets
Puffer jackets
Down jackets
Windbreakers
Hiking jackets
Softshell jackets
Work jackets
Utility jackets
Tactical jackets
Motorcycle jackets
Coach jackets
Harrington jackets
Field jackets
Trucker jackets
Fleece jackets
Rain jackets
The category influences the technical requirements of the tech pack.
For example, a lightweight windbreaker and an insulated winter jacket should not use the same specification structure.
Related: 100+ Types of Jackets
A professional jacket tech pack should include technical flats rather than relying only on fashion illustrations.
A technical flat is a simplified two-dimensional drawing showing the construction and appearance of the garment.
It normally shows:
Front
Back
Side where necessary
Interior where necessary
Seam lines
Pockets
Zippers
Buttons
Panels
Collar
Cuffs
Waistband
Yokes
Hood
Logo placement
The drawing should communicate construction rather than artistic styling.
The front view should identify:
Center-front zipper
Buttons
Snap closures
Chest pockets
Lower pockets
Collar
Cuffs
Seams
Panels
Logo placement
The back drawing can identify:
Back yoke
Center-back seam
Shoulder seams
Back panels
Ventilation
Back graphics
Embroidery
Reflective details
For technical jackets, padded jackets, reversible jackets, and complex outerwear, an inside view can be extremely useful.
It may show:
Lining
Inside pockets
Seam taping
Insulation
Internal labels
Reinforcement
Internal construction
One of the most important sections of a jacket tech pack is the measurement specification.
Jacket tech pack measurement specification with points of measure and garment dimensions
Depending on the design, measurements can include:
Body length
Chest width
Shoulder width
Across back
Sleeve length
Bicep width
Elbow width
Cuff opening
Bottom opening
Hem width
Collar height
Hood height
Hood opening
Pocket width
Pocket height
Pocket placement
Zipper length
Placket width
Not every jacket requires every measurement.
The measurement list should match the garment construction.
Do not simply write:
Chest: 58 cm
Explain where and how the chest measurement should be taken.
For example, the tech pack can specify a measurement point from one side seam to the other at a defined position.
Clear measurement methods reduce disputes during sampling and production.
Manufacturing measurements naturally have some variation.
Your tech pack should therefore define acceptable tolerances where appropriate.
For example:
Measurement Target Tolerance
Chest Width 60 cm ±1 cm
Body Length 70 cm ±1 cm
Sleeve Length 64 cm ±1 cm
Bottom Width 54 cm ±1 cm
The actual tolerances should be determined according to the garment, material, construction, and manufacturing requirements.
Your tech pack should clearly identify the intended size range.
For example:
XS
S
M
L
XL
XXL
For extended sizing, you may need:
3XL
4XL
5XL
Do not assume the manufacturer knows your intended size range.
Many apparel specifications start from a base size.
For example:
Base Size: M
The manufacturer can then use the grading rules to develop other sizes.
A production size chart may include:
Chest
Shoulder
Sleeve
Body length
Bottom opening
Bicep
Cuff
Neck
Other garment-specific measurements
For brands selling internationally, it is also useful to distinguish garment measurements from body measurements.
Fabric is one of the most important components of a jacket tech pack.
Instead of writing:
Black polyester fabric
provide more useful information such as:
Fiber composition
Fabric construction
Weight
Finish
Stretch requirements
Performance requirements
For example:
100% polyester woven shell, specified fabric weight, water-repellent finish.
The final specification should reflect the actual material selected for the project.
Fabric weight can influence:
Jacket structure
Warmth
Drape
Durability
Cost
Shipping weight
Seasonal suitability
Commonly referenced fabric-weight measurements include GSM.
Color specifications can use:
Pantone references
Physical swatches
Lab dips
Approved color standards
Manufacturer color references where appropriate
For brand-critical colors, an approved physical reference can be particularly useful.
Depending on the jacket, finishes may include:
Water-repellent
Waterproof
Coated
Brushed
Washed
Garment-dyed
Anti-static
Wind-resistant
Peached
Matte
Glossy
Do not assume a finish based only on the fabric name.
Outerwear often contains more than one material layer.
Specify:
Lining material
Composition
Weight
Color
Finish
Construction
For insulated jackets, specify:
Insulation type
Weight
Distribution
Thickness where relevant
Quilting construction
Performance requirements
Possible insulation categories include:
Synthetic insulation
Down
Down alternative
Polyester filling
Quilted insulation
Interlining may influence:
Collar structure
Cuff structure
Placket stiffness
Pocket reinforcement
Overall garment shape
The tech pack should specify where reinforcement is required.
This is where a tech pack becomes much more useful than a simple product description.
Document relevant seam requirements such as:
Seam type
Seam allowance
Stitch type
Stitch density where applicable
Reinforcement
Seam finishing
Depending on the garment, you may need to define:
Stitch type
Stitch density
Thread specification
Topstitching
Bartacks
Reinforcement stitching
For quilted jackets and padded outerwear, specify:
Quilt pattern
Quilt spacing
Quilt direction
Stitching method
Panel construction
Technical outdoor garments may require seam sealing or taping.
If the jacket needs waterproof construction, document:
Seam-tape type
Application areas
Seam-sealing requirements
Performance requirements
Pockets are frequently underestimated in jacket development.
A tech pack should document:
Pocket type
Pocket dimensions
Pocket opening
Pocket placement
Pocket bag material
Zipper
Snap
Velcro
Flap
Closure method
Reinforcement
Welt pockets
Patch pockets
Zip pockets
Chest pockets
Cargo pockets
Interior pockets
Hidden pockets
Handwarmer pockets
Include drawings and measurements whenever the pocket is important to the design.
Hardware can significantly affect both the appearance and performance of a jacket.
Specify:
Zipper type
Zipper length
Zipper color
Tape color
Puller style
Teeth type
Finish
Brand where required
Specify:
Size
Finish
Color
Location
Quantity
Specify:
Diameter
Material
Color
Finish
Placement
Depending on the jacket, this may include:
Cord locks
Buckles
D-rings
Eyelets
Adjusters
Rivets
Metal hooks
A good tech pack prevents the manufacturer from choosing hardware based purely on availability.
These components strongly influence the jacket's fit and appearance.
Specify:
Collar height
Shape
Construction
Rib specification
Closure
Interlining
For hooded jackets, specify:
Hood dimensions
Hood depth
Opening
Drawcord
Cord locks
Visor
Adjustment system
Lining
Specify:
Rib construction
Cuff opening
Elastic
Velcro
Snap adjustment
Zipper opening
Specify:
Hem width
Elastic
Ribbing
Drawcord
Toggle
Binding
Finishing
Branding should have its own section in the tech pack.
Specify:
Label type
Dimensions
Material
Color
Artwork
Placement
Sewing method
Include:
Fiber composition
Care instructions
Country-of-origin information where required
Brand information
Other legally required information for the intended market
Regulatory labeling requirements can vary by destination market. For U.S. apparel products, brands can review the Federal Trade Commission's official Clothing and Textiles labeling requirements and relevant textile labeling guidance.
For international sales, requirements should be checked for each target market.
Document:
Size
Material
Artwork
Attachment method
Placement
Include:
Artwork
Dimensions
Thread colors
Border
Backing
Placement
Never simply place a logo image in a tech pack without technical information.
Specify:
Location
Distance from seam
Width
Height
Orientation
For example:
Left chest logo centered X cm below shoulder seam.
The exact measurement should be determined by the actual garment.
Specify:
Artwork
Size
Thread colors
Stitch style where required
Placement
Backing
Density requirements where relevant
Specify:
Artwork
Print size
Print location
Ink colors
Print method
Finish
Specify:
Artwork
Size
Placement
Color
Finish
Application requirements
A Bill of Materials, commonly called a BOM, lists the materials and components required to make the jacket.
A jacket BOM may include:
Component Specification Color Quantity
Shell Fabric Approved shell fabric Black As required
Lining Approved lining Black As required
Zipper Approved zipper Black 1
Main Label Woven label Brand colors 1
Care Label Printed label White 1
Thread Approved thread Matching As required
Snaps Approved snaps Black As required
Hang Tag Brand artwork Brand colors 1
The exact BOM should reflect the actual product.
A BOM helps the manufacturer understand:
What materials are required
Which components need approval
Which materials must be sourced
What needs to be ordered
What components belong to each garment
It is particularly useful when a jacket contains many custom components.
If the jacket will be produced in multiple colors, create separate colorway specifications.
For example:
Colorway A: Black
Colorway B: Olive
Colorway C: Navy
Document changes in:
Shell
Lining
Thread
Zipper
Snaps
Rib
Logo
Embroidery
Labels
A black shell, black zipper, black thread, and black rib may have different visual tones.
For premium products, color consistency across components can matter significantly.
Construction callouts are notes that explain specific manufacturing details directly on the technical drawing.
Examples include:
“Double-needle topstitch”
“Bartack at pocket opening”
“Elasticated cuff”
“Inside seam binding”
“Reinforced pocket corners”
“Water-resistant zipper”
“Quilted lining”
“Logo embroidery centered at chest”
Callouts allow the manufacturer to connect the drawing with written instructions.
Grading is the process of adjusting a base-size pattern to create other sizes.
For example:
M → S → XS
and:
M → L → XL → XXL
Your manufacturer or pattern maker should understand the intended grading direction.
Poor grading can cause:
Sleeve proportions to feel incorrect
Shoulder width to change incorrectly
Body length to become unbalanced
Pocket placement to look wrong
Hood proportions to change poorly
Overall fit to become inconsistent
A good tech pack should identify the base size and provide the necessary grading information or measurement specifications.
A tech pack can also become the foundation for production quality control.
Define which measurements must be checked.
Define requirements for:
Stitching
Loose threads
Seam quality
Zippers
Hardware
Pockets
Labels
Branding
Check:
Color
Fabric appearance
Logo placement
Print quality
Embroidery
Symmetry
Overall finishing
For technical jackets, functional checks may include:
Zipper operation
Snap operation
Hood adjustment
Pocket closure
Drawcord adjustment
Water resistance where applicable
ISO 9001 provides a recognized framework for quality management systems and process control. Brands looking to build a more formal production-quality system can review the official ISO 9001 standard.
Packaging should also be documented.
Include:
Folding method
Individual polybag
Size sticker
Barcode
Hang tag
Carton quantity
Carton dimensions
Carton markings
Shipping labels
Retail packaging
This is particularly important for e-commerce brands and retailers with strict warehouse requirements.
A tech pack should evolve during development.
The first sample may not be perfect.
After receiving it, record:
What is wrong
What needs to change
What needs to remain unchanged
New measurement
New material
New construction
New placement
Approval status
For example:
Version 1.0 — Initial Tech Pack
Version 1.1 — Sample Corrections
Version 1.2 — Final Measurement Update
Version 2.0 — Approved for Production
This prevents an outdated specification from accidentally being used for production.
Before approving production, review the complete document.
Front technical drawing
Back technical drawing
Interior drawing if necessary
Jacket measurements
Size chart
Base size
Grading information
Fabric composition
Fabric weight
Fabric color
Lining
Insulation
Interlining
Seam construction
Stitching
Pockets
Zippers
Snaps
Buttons
Hardware
Collar
Hood
Cuffs
Hem
Labels
Hang tags
Logo artwork
Embroidery
Printing
BOM
Colorways
Construction callouts
Measurement tolerances
QC requirements
Packaging
Sample comments
Version number
Final approval
A good tech pack should be:
The manufacturer should not have to interpret basic requirements.
Use dimensions, specifications, tolerances, and reference standards wherever possible.
Use technical drawings and callouts to explain complicated construction.
The drawings, BOM, measurement chart, and written instructions should not contradict each other.
A tech pack should explain how the product should actually be manufactured rather than only describing its appearance.
Every major revision should have a version number and date.
A manufacturer should be able to quickly locate:
Measurements
Materials
Construction
Branding
Hardware
Packaging
QC requirements
A sketch may communicate the idea but not the technical requirements.
Without measurements, fit becomes difficult to reproduce consistently.
A target measurement alone may not clearly define acceptable production variation.
“Polyester fabric” is not a sufficiently detailed material specification for many production projects.
Zippers, snaps, buttons, and cord locks can significantly affect the finished jacket.
A logo file without placement dimensions leaves too much room for interpretation.
Color names such as “dark green” or “off-white” can be interpreted differently.
Pocket size and placement can dramatically affect jacket appearance and usability.
Without version control, the manufacturer may accidentally work from an outdated specification.
Major changes should be documented and approved before bulk manufacturing.
The correct level of detail depends on the complexity of the jacket.
A simple coach jacket may require fewer construction details than:
Waterproof hiking jacket
Technical shell jacket
Puffer jacket
Tactical jacket
Motorcycle jacket
Multi-pocket utility jacket
Reversible jacket
The more components and performance requirements a jacket has, the more detailed the technical package should become.
A useful principle is:
Document every manufacturing decision that another person would otherwise have to guess.
Yes.
A beginner can create a basic tech pack using:
Adobe Illustrator
Technical drawing software
Apparel CAD software
Spreadsheet software
Presentation software
Specialized fashion tech-pack software
However, creating a technically complete production package requires more than drawing a jacket.
You need to understand:
Garment measurements
Construction
Fabrics
Hardware
Sewing
Grading
Production terminology
Quality requirements
For complicated outerwear, working with an experienced pattern maker, technical designer, or manufacturer can reduce development problems.
When requesting a custom jacket sample or production quote, provide as much useful information as possible.
A strong initial package can include:
Tech pack
Jacket drawings
Reference images
Fabric requirements
Size range
Quantity
Colorways
Branding requirements
Target market
Packaging requirements
Desired delivery timeline
JIMJACKETS can work from technical specifications, reference images, design concepts, and product requirements to develop custom jacket samples and production. For brands that are still developing their specifications, the manufacturer can also help clarify practical production details.
See the JIMJACKETS Custom Jackets section for custom jacket development options.
Jacket tech pack used for custom jacket sampling and manufacturing production
For a custom jacket project, the tech pack can serve as the central reference connecting:
Design → Sampling → Revision → Approval → Production → Quality Control → Reorder
A detailed technical package can help communicate:
Garment measurements
Fabric specifications
Construction
Branding
Hardware
Colorways
Packaging
Quality requirements
Once the product is approved, the technical information can also support repeat production.
This becomes particularly valuable when a clothing brand moves from a first sample or small-batch order into larger production.
JIMJACKETS offers Private Label Jacket Manufacturing for brands that need custom jackets with their own branding, materials, specifications, labels, and packaging.
A tech pack becomes even more important when production volume increases.
For a small initial order, the manufacturer may still be able to resolve some details through direct communication and sample revisions.
For larger production, relying on informal communication becomes increasingly risky.
A finalized tech pack provides a common reference for:
Production teams
Pattern makers
Material suppliers
Quality-control staff
Packaging teams
Brand representatives
This is why brands should finalize their technical documentation before placing a major bulk jacket order.
For more information about scaling production, see:
How to Scale From Small-Batch Jacket Production to Bulk Manufacturing
A jacket tech pack is a technical production document containing the measurements, materials, construction, components, branding, artwork, grading, packaging, and quality requirements needed to develop and manufacture a specific jacket.
A custom jacket tech pack should include technical drawings, measurements, fabric specifications, color references, construction details, hardware, pockets, labels, branding, BOM, grading information, packaging, QC requirements, and sample revisions.
A tech pack is highly recommended for custom jacket manufacturing because it gives the manufacturer clear technical instructions and reduces ambiguity during sampling and production.
Yes, but technical garment knowledge is helpful. A designer can create the creative direction while a technical designer, pattern maker, or experienced jacket manufacturer can help translate it into production specifications.
Adobe Illustrator is commonly used for technical flats, while spreadsheets can be useful for measurements and BOMs. Specialized apparel CAD and tech-pack software can also be used.
There is no fixed page count. A simple jacket may require a relatively compact document, while a technical jacket with multiple materials, pockets, hardware, and performance requirements may require many pages.
BOM stands for Bill of Materials. It lists the materials and components required to manufacture the jacket, such as shell fabric, lining, zippers, labels, thread, snaps, and other trims.
POM generally means Point of Measure. It identifies the specific location and method used to measure a garment dimension.
It is a table defining the required garment measurements for the selected size or size range, often including target measurements and tolerances.
Measurement tolerances define the acceptable amount of variation around a target garment measurement.
A technical flat is a simplified two-dimensional drawing showing the jacket's construction and visible details rather than a fashion illustration.
Yes. Front and back views are normally useful, and interior or side views can be added when the construction requires them.
When fabric weight is important to the product, specifying GSM or another appropriate fabric-weight standard can help communicate the required material more precisely.
Pantone references can be useful for communicating colors, especially for branded products, but the final color approval process may also involve physical swatches or lab dips.
If an approved physical sample exists, it can be extremely useful as a reference alongside the technical documentation.
Some manufacturers and technical-development teams can help convert a design concept or reference garment into production specifications. The exact service depends on the manufacturer and project.
You can use the same base technical package when the construction remains identical, but each colorway should clearly document any changes to fabrics, trims, hardware, thread, labels, or branding.
Yes. Packaging requirements should be documented if the brand has specific folding, polybagging, labeling, barcode, carton, or retail-packaging requirements.
Update it whenever an approved production specification changes. Use version numbers so the manufacturer can identify the latest approved document.
A good tech pack does not automatically guarantee a lower price, but clearer specifications can reduce avoidable sampling revisions, material misunderstandings, production mistakes, and development inefficiencies.
It is still highly recommended. A clear technical package can help ensure that even a small production run accurately reflects the intended product.
Not necessarily. If the jacket remains unchanged, the approved tech pack can be reused. However, any material, measurement, construction, color, branding, or packaging changes should be documented.
Before sending your custom jacket tech pack to a manufacturer, make sure you can answer all of these questions:
What is the jacket?
Jacket category
Intended fit
Intended use
Target customer
What is it made from?
Shell
Lining
Insulation
Interlining
Rib
Thread
Hardware
How is it constructed?
Seams
Stitching
Pockets
Collar
Hood
Cuffs
Hem
Closures
How should it fit?
Size range
Base size
POMs
Measurements
Tolerances
Grading
How is it branded?
Main label
Care label
Logo
Embroidery
Patch
Hang tag
How should it be produced?
BOM
Materials
Colorways
Construction
QC requirements
Packaging
Sample approval
If all of these areas are clearly documented, your manufacturer has a much stronger production reference.
A custom jacket starts with an idea, but a manufacturer needs technical information to turn that idea into a repeatable product.
A strong jacket tech pack connects:
Design → Technical Drawing → Measurements → Materials → Construction → Branding → Sampling → Approval → Manufacturing → Quality Control
The more complex the jacket, the more important this documentation becomes.
For startups and established fashion brands alike, the best approach is to create the technical specification before committing to large-scale manufacturing, then use the approved tech pack as the reference for sampling, production, quality control, and future reorders.
If you are developing a custom jacket and need a manufacturing partner, prepare your design, technical specifications, reference images, target quantity, materials, branding requirements, and size range before contacting the factory.
JIMJACKETS can help brands turn custom jacket concepts and technical requirements into samples and production-ready garments, from initial development through private-label manufacturing and larger production runs.