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What Is a Bill of Materials (BOM) in Garment Manufacturing? A Beginner’s Guide
When a clothing brand develops a garment, the finished product is made from much more than just the main fabric.
A T-shirt may need fabric, rib, sewing thread, labels, printing, packaging, and hang tags.
A hoodie may also require drawcords, eyelets, zippers, elastic, and additional trims.
To keep all these materials organized, garment manufacturers use a document called a Bill of Materials, commonly known as a BOM.
For new clothing brands, understanding the BOM is important because it helps control sourcing, costing, quality, and production accuracy.
This guide explains what a Bill of Materials is, what information it contains, how it is used in garment manufacturing, and why it is an important part of the tech pack.
What Is a Bill of Materials in Garment Manufacturing?
A Bill of Materials (BOM) is a structured list of all the materials, trims, accessories, labels, and packaging items required to manufacture a garment.
It acts like a complete material checklist for the product.
For example, a T-shirt BOM may include:
Main fabric
Neck rib
Sewing thread
Main label
Size label
Care label
Print
Hang tag
Polybag
A hoodie BOM may include:
Main fleece fabric
Rib
Drawcord
Eyelets
Zipper
Thread
Labels
Printing or embroidery
Hang tag
Polybag
The BOM helps ensure that every required component is identified before bulk production begins.
Why Is a BOM Important?
Garment manufacturing involves multiple materials from different suppliers.
Without a clear BOM, important components can be forgotten or incorrectly sourced.
A BOM helps with:
Material planning
Costing
Supplier communication
Purchasing
Production preparation
Quality control
Inventory management
It also helps different teams work from the same information.
For example, the merchandiser, sourcing team, factory, and quality team can all refer to the same BOM.
BOM vs Tech Pack: What Is the Difference?
A BOM is usually one part of a garment tech pack.
A tech pack may include:
Garment sketches
Measurements
Construction details
Fabric specifications
Colour information
Print details
Label placement
Packaging
BOM
The BOM focuses specifically on what materials are required.
The rest of the tech pack explains how the garment should be made.
So:
Tech Pack = Full Production Specification
BOM = Material List Inside the Tech Pack
What Information Is Usually Included in a BOM?
A garment BOM may contain several columns.
Common fields include:
Item number
Material category
Material description
Colour
Size
Quantity
Unit of measurement
Supplier
Supplier code
Approved reference
Cost
The exact format depends on the company or factory.
Example of a Simple T-Shirt BOM
Item
Description
Colour
Specification
Quantity
Main Fabric
Cotton Single Jersey
Black
220 GSM
As required
Neck Rib
1×1 Rib
Black
Match body
As required
Sewing Thread
Polyester Thread
Black
Matching shade
As required
Main Label
Woven Brand Label
Black/White
5 × 2 cm
1 pc
Size Label
Satin Label
Black
S–XXL
1 pc
Care Label
Printed Satin
White
Care details
1 pc
Print
Screen Print
White
Front chest
1 pc
Hang Tag
Printed Card
Black
Brand artwork
1 pc
Polybag
Transparent LDPE
Clear
Garment size
1 pc
This is only an example.
Actual BOM details depend on the garment.
1. Main Fabric in the BOM
The main fabric is usually the most important line item.
The BOM should clearly identify:
Fabric name
Fibre composition
GSM
Width or DIA
Colour
Finish
Supplier
For example:
Fabric: Polyester InterlockComposition: 100% PolyesterGSM: 160DIA: 60Colour: NavyFinish: Quick-dry
Clear fabric information helps prevent incorrect sourcing.
2. Secondary Fabrics
Some garments use more than one fabric.
Examples include:
Rib
Mesh
Lining
Contrast panels
Pocket lining
Cuff fabric
These should be listed separately.
For example, a sports T-shirt may use:
Main polyester interlock
Mesh side panels
Rib neckline
All three belong in the BOM.
3. Sewing Thread
Thread should also be included.
Important details may include:
Thread type
Colour
Supplier
Count or specification
For example:
Polyester sewing thread – black – matching body shade
Different garment areas may use different thread types.
4. Labels in the BOM
A garment can contain several labels.
Common examples include:
Main label
Size label
Care label
Composition label
Country-of-origin label
Each label should be listed separately if needed.
The BOM can specify:
Material
Size
Colour
Artwork
Placement reference
5. Zippers
Zippers should be clearly defined.
Details may include:
Type
Length
Colour
Material
Supplier
Slider type
For example:
No. 5 nylon coil zipper – 65 cm – black
A vague entry such as “black zipper” is not specific enough.
6. Buttons
Button information may include:
Material
Size
Colour
Number of holes
Branding
Quantity per garment
For a polo shirt, for example:
3 plastic buttons – 14L – matching body colour
7. Drawcords
For hoodies, joggers, and shorts, the BOM may include drawcord information.
Specify:
Material
Shape
Diameter
Length
Colour
Tip style
For example:
Round polyester drawcord – black – 120 cm – metal aglets
8. Eyelets
Eyelets should also be listed.
Specify:
Material
Size
Finish
Colour
Example:
Metal eyelet – 8 mm – matte black
9. Elastic
Elastic is commonly used in:
Waistbands
Cuffs
Sportswear
Innerwear
The BOM may specify:
Width
Stretch
Material
Length per garment
For example:
40 mm knitted elastic – black
10. Printing
Printing can also be listed in the BOM.
The entry may include:
Print method
Colour
Size
Artwork reference
Placement
For example:
Screen print – white – 20 × 25 cm – centre front
This helps connect artwork requirements with costing and production.
11. Embroidery
Embroidery can be included in the same way.
Details may include:
Logo size
Thread colour
Stitch count
Placement
Example:
Left chest embroidery – 6 cm wide – white thread
12. Hang Tags
Hang tags are often included in the BOM.
Specify:
Material
Size
Artwork
String
Quantity
For example:
300 GSM printed hang tag – 5 × 9 cm – black string
13. Packaging Materials
Packaging may also appear in the BOM.
Common packaging items include:
Polybag
Size sticker
Barcode
Tissue paper
Shipping box
Carton
For example:
1 transparent polybag per garment
1 size sticker per polybag
Why Quantity Is Important in a BOM
A BOM should show how much of each material is needed.
For countable items, this is simple.
Example:
1 main label
1 care label
3 buttons
2 eyelets
For fabric and thread, the quantity may be calculated differently.
Fabric may be shown in:
Kg
Metres
Yards
Consumption per garment
This information supports material planning and costing.
Units of Measurement in a BOM
A BOM may use different units depending on the material.
Common units include:
Kg
Metre
Yard
Piece
Pair
Set
Cone
Roll
For example:
Fabric = Kg
Buttons = Pieces
Elastic = Metres
Labels = Pieces
Using correct units prevents purchasing errors.
Supplier Information in a BOM
The BOM may include supplier information.
This can include:
Supplier name
Supplier code
Contact
Article number
Material reference
This helps factories reorder the same approved material.
For example:
Supplier: XYZ TrimsArticle Code: ZIP-065-BLK
This is much safer than relying on memory.
Why Colour References Matter
Colour should be clearly documented.
Instead of writing:
Green
use:
Pantone reference
Supplier colour code
Approved swatch
Lab dip reference
For example:
Olive Green – Pantone 18-0527 TCX
Accurate colour references help keep different trims visually consistent.
BOM and Garment Costing
The BOM is a major input for garment costing.
Each material has a cost.
For example:
Material
Example Cost
Main Fabric
₹110
Rib
₹8
Thread
₹4
Labels
₹10
Print
₹35
Hang Tag
₹5
Packaging
₹10
Material Cost
₹182
This is only an example.
The manufacturer can then add:
Cutting
Stitching
Finishing
Overheads
Wastage
This helps calculate the total garment cost.
BOM and Sourcing
The sourcing team uses the BOM to identify what must be purchased.
For example:
Before production begins, they need to ensure availability of:
500 kg fabric
5,000 labels
10,000 buttons
5,000 polybags
The BOM becomes a purchasing reference.
BOM and Inventory Planning
A clear BOM also supports inventory planning.
Factories can track:
Required quantity
Available stock
Pending orders
Shortages
This reduces the risk of production delays.
BOM and Quality Control
The quality team can use the BOM to verify that the correct materials were used.
For example:
The BOM specifies:
Matte black eyelet
But production uses:
Shiny silver eyelet
That is a material mismatch.
Without a BOM, this error may be missed.
BOM and Sample Development
The BOM should be reviewed during sampling.
The proto sample may use temporary materials.
But by the pre-production sample stage, the final approved BOM should ideally be used.
This helps ensure:
Correct trims
Correct labels
Correct colours
Correct packaging
BOM Revision Control
BOMs can change during development.
For example:
Version 1:
Plastic zipper
Version 2:
Metal zipper
Version 3:
Branded zipper puller added
Changes should be recorded clearly.
A revision table can include:
Version
Date
Change
V1
01-10-2026
Initial BOM
V2
04-10-2026
Zipper updated
V3
08-10-2026
Label size changed
This helps everyone use the latest information.
Why Version Control Is Important
Imagine the merchandiser is using BOM V3, but the factory is still using BOM V1.
The result could be:
Wrong zipper
Wrong label
Wrong packaging
Version control prevents this.
Always mark the latest approved BOM clearly.
Simple BOM Workflow
A garment BOM usually follows this process:
Design → Tech Pack → Initial BOM → Sample → Material Changes → Revised BOM → PP Sample → Final BOM → Bulk Production
The BOM evolves as the garment develops.
Example BOM for a Hoodie
A hoodie may include:
Item
Description
Main Fabric
Cotton-Polyester Fleece
Rib
2×2 Rib
Thread
Polyester Thread
Drawcord
Round Cotton Cord
Eyelets
Matte Black Metal
Zipper
Nylon Coil Zipper
Main Label
Woven Label
Size Label
Satin Label
Care Label
Printed Satin
Print
DTF Back Print
Hang Tag
Printed Card
Polybag
Transparent
This is much more detailed than simply writing “hoodie materials.”
Example BOM for a Polo Shirt
A polo BOM may include:
Piqué main fabric
Collar
Cuff
Buttons
Thread
Main label
Size label
Care label
Hang tag
Polybag
Each item should have its own specification.
Example BOM for Sportswear
A sportswear BOM may include:
Polyester interlock
Mesh
Elastic
Heat-transfer label
Reflective trim
Zipper
Thread
Print
Packaging
Performance garments often require more technical material details.
Standard BOM vs Detailed BOM
A basic BOM may only include:
Material name
Colour
Quantity
A detailed BOM may include:
Supplier
Article code
Composition
Size
Finish
Unit
Consumption
Cost
Approval status
Larger brands and more complex products usually require more detailed BOMs.
Common BOM Mistakes New Clothing Brands Make
1. Missing Materials
Small items such as:
Size labels
Thread
Stickers
Eyelets
are sometimes forgotten.
Every production component should be listed.
2. Vague Descriptions
“Black zipper” is too vague.
Specify:
Type
Size
Length
Finish
3. No Colour Reference
General colour names can create shade differences.
Use an approved reference.
4. Missing Quantities
The factory must know how much is required per garment.
5. Wrong Units
Confusing pieces, metres, and kilograms can create purchasing mistakes.
6. No Supplier Reference
Custom materials can be difficult to reorder without supplier codes.
7. Poor Version Control
An outdated BOM can create production errors.
How New Clothing Brands Can Create a Simple BOM
If you are creating your first product, start with a simple spreadsheet.
Use columns such as:
No.
Category
Description
Colour
Specification
Qty
Supplier
Then list every material required for the garment.
For example:
Main fabric
Rib
Thread
Main label
Size label
Care label
Print
Hang tag
Polybag
You can make the BOM more detailed as your business grows.
BOM Checklist Before Production
Before approving production, check:
Is every material listed?
Are fabric details correct?
Are trim colours approved?
Are sizes correct?
Are quantities correct?
Are supplier codes included?
Are labels approved?
Is packaging included?
Is the latest revision being used?
A five-minute BOM review can prevent expensive mistakes.
BOM and Low MOQ Clothing Production
Small brands often produce low quantities.
In this situation, BOM planning becomes even more important.
Custom trims may require higher MOQs than the garment order.
For example:
You need:
100 hoodies
But the custom label supplier requires:
1,000 labels
The BOM helps reveal these sourcing challenges early.
Brands can then decide whether to:
Use standard trims
Order extra inventory
Change suppliers
Simplify the product
BOM and Sustainable Sourcing
Brands interested in lower-impact production can also use the BOM to track material choices.
Examples include:
Recycled polyester thread
Recycled labels
FSC-certified paper tags
Reduced-plastic packaging
Recycled fabric
Supplier documentation should support sustainability claims where applicable.
Why a BOM Helps Manufacturers Quote More Accurately
A manufacturer cannot provide an accurate price if materials are unclear.
Compare:
Option A: “I need a hoodie.”
versus:
Option B: “I need a 300 GSM fleece hoodie with 2×2 rib, metal eyelets, cotton drawcord, DTF back print, woven label, and individual polybag.”
The second request gives the manufacturer far more information.
A clear BOM leads to better costing.
Frequently Asked Questions
What does BOM mean in garment manufacturing?
BOM means Bill of Materials. It is a complete list of materials, trims, accessories, labels, and packaging required to manufacture a garment.
Is fabric included in the BOM?
Yes.
Main fabric and any secondary fabrics should be listed.
Are labels included in the BOM?
Yes.
Main labels, care labels, size labels, and other required labels are commonly included.
Is packaging part of the BOM?
It can be.
Many garment BOMs include polybags, stickers, hang tags, and other packaging materials.
Is a BOM the same as a tech pack?
No.
The BOM is one section of the tech pack.
The tech pack contains broader technical information about the entire garment.
Who creates the BOM?
The BOM may be created by:
Designer
Technical designer
Merchandiser
Product developer
Manufacturer
The final version should be approved before production.
Can a BOM change during sampling?
Yes.
Materials may change based on:
Cost
Availability
Quality
Design
All changes should be recorded.
Why is BOM important for costing?
The BOM lists all the materials that must be purchased, making it easier to calculate the product’s material cost.
Final Thoughts
A Bill of Materials may look like a simple spreadsheet, but it plays a major role in garment manufacturing.
It tells the manufacturer exactly which materials are required to build the product.
A good BOM helps control:
Fabric
Trims
Labels
Colours
Quantities
Suppliers
Cost
Packaging
It also connects several important parts of the production process, including sourcing, sampling, costing, purchasing, and quality control.
For new clothing brands, the BOM does not need to be complicated.
Start with a clear list of every material used in the garment and make the information more detailed as your products become more complex.
Most importantly, keep the BOM updated.
If the manufacturer knows exactly what materials are required, there is less room for confusion during production.
What Is a Garment Tech Pack? Complete Guide to the Information Manufacturers Need
When a clothing brand wants to manufacture a new garment, a simple sketch is not enough.
Manufacturers need detailed instructions about the design, fabric, measurements, trims, stitching, colours, labels, prints, packaging, and quality requirements.
That complete technical document is commonly called a garment tech pack.
A tech pack helps convert a clothing idea into a product that can actually be sampled and manufactured.
For new clothing brands, learning how tech packs work can reduce confusion, improve sample accuracy, and prevent costly production mistakes.
This guide explains what a garment tech pack is, what information it usually contains, why manufacturers need it, and how brands can prepare one before production.
What Is a Garment Tech Pack?
A garment tech pack, short for technical package, is a detailed document that communicates all important product specifications from the brand or designer to the manufacturer.
It acts as a production blueprint.
A tech pack may include:
Garment sketches
Measurements
Fabric details
Colour information
Stitching instructions
Trims
Labels
Printing or embroidery details
Size specifications
Construction notes
Packaging instructions
The exact format can vary depending on the garment category and manufacturer.
For a simple T-shirt, the tech pack may be relatively short.
For a complex jacket, sportswear garment, or fashion product, it may contain many pages of detailed technical information.
Why Is a Tech Pack Important?
A tech pack helps reduce assumptions.
Without clear documentation, a manufacturer may have to guess details such as:
What fabric should be used?
What GSM is required?
What neckline construction is needed?
Where should the logo be placed?
What should the chest measurement be?
Which thread colour should be used?
What size label is required?
How should the garment be packed?
Every guess creates a risk of error.
A detailed tech pack gives the manufacturer a clear reference to follow.
It also makes communication easier when samples need corrections.
Instead of saying:
“Make the sleeve a little longer.”
the brand can specify:
“Increase sleeve length from 22 cm to 23 cm.”
This makes development more precise.
Who Uses a Garment Tech Pack?
A tech pack may be used by several people during the garment development process.
These can include:
Fashion designer
Technical designer
Pattern maker
Merchandiser
Fabric sourcing team
Sampling team
Garment manufacturer
Quality control team
Production team
Brand owner
Everyone involved can refer to the same technical information.
This helps keep development consistent.
What Information Does a Manufacturer Need?
Manufacturers usually require enough information to understand exactly what garment needs to be made.
The main sections are explained below.
1. Garment Style Information
The first section usually contains basic product identification details.
This may include:
Brand name
Style name
Style number
Product category
Season
Collection name
Gender or target customer
Date
Version number
For example:
Style Name: Oversized Essential T-ShirtStyle Number: TS-001Category: Unisex T-ShirtFit: OversizedSeason: Summer Collection
A style number helps avoid confusion when multiple garments are being developed at the same time.
2. Technical Flat Sketches
One of the most important parts of a tech pack is the technical flat sketch.
This is a clean drawing that shows the garment without a model.
Usually, both front and back views are included.
For complex garments, additional views may be required.
The sketch can show:
Neckline
Sleeves
Seams
Pockets
Zippers
Panels
Cuffs
Rib
Drawstrings
Logo placement
Stitch lines
Technical flats are different from fashion illustrations.
A fashion illustration communicates the overall style.
A technical flat communicates construction.
3. Fabric Specifications
The tech pack should clearly describe the required fabric.
Important information can include:
Fabric name
Fibre composition
Knit or weave structure
GSM
Width or DIA
Stretch
Finish
Colour
Performance properties
For example:
Fabric: Polyester InterlockComposition: 100% PolyesterGSM: 160DIA: 60Finish: Quick-dry finishColour: Black
For another product:
Fabric: Cotton Single JerseyComposition: 100% CottonGSM: 220Fit: Oversized T-shirt
The more specific the fabric requirement, the easier it is for the manufacturer to source the correct material.
4. Colour Information
Colour should be clearly defined.
Avoid instructions such as:
Dark blue
Light green
Nice brown
These descriptions are subjective.
Instead, brands may use:
Pantone references
Approved lab dips
Physical fabric swatches
Supplier shade references
For example:
Colour: Pantone 19-4006 TCX Black Beauty
When exact colour matching is important, physical approval samples are usually more reliable than screen colours alone.
5. Bill of Materials
A Bill of Materials, often called a BOM, lists all materials used to make the garment.
This can include:
Main fabric
Rib
Lining
Zipper
Buttons
Drawcord
Elastic
Labels
Thread
Hang tag
Packaging
For example:
Item
Material
Colour
Supplier / Reference
Main Fabric
Polyester Interlock
Black
Approved
Neck Rib
Polyester Rib
Black
Match body
Main Label
Woven Label
Black/White
Brand artwork
Size Label
Satin Label
Black
S–XXL
The BOM helps ensure nothing is forgotten.
6. Measurement Specification
The measurement specification is one of the most critical parts of the tech pack.
It tells the factory how large each part of the garment should be.
For a T-shirt, measurements may include:
Chest
Length
Shoulder
Sleeve length
Sleeve opening
Neck width
Front neck drop
Bottom opening
Example:
Measurement
M
Chest Width
52 cm
Body Length
70 cm
Shoulder
46 cm
Sleeve Length
22 cm
Sleeve Opening
18 cm
These values are only examples.
Actual measurements depend on the garment and fit.
7. Size Grading
If the garment is being produced in multiple sizes, the tech pack may include measurements for every size.
Example:
Measurement
S
M
L
XL
XXL
Chest Width
50
52
54
56
58
Body Length
68
70
72
74
76
Shoulder
45
46
47
48
49
This is called a graded measurement specification.
The manufacturer uses these measurements when creating or checking different sizes.
8. Measurement Tolerances
Production garments may not measure exactly the same down to the millimetre.
Therefore, brands often specify acceptable tolerances.
Example:
Chest Width: 52 cm ± 1 cm
Body Length: 70 cm ± 1 cm
Tolerances should be realistic and appropriate for the garment.
Too-tight tolerances can make production difficult.
Too-loose tolerances can create inconsistent fitting.
9. Point of Measurement Instructions
A measurement value is useful only if the factory knows exactly where to measure it.
This is why tech packs often include POMs, or Points of Measurement.
For example:
Chest Width: Measure straight across the garment 2.5 cm below the armhole.
Body Length: Measure from the highest shoulder point to the bottom hem.
Sleeve Length: Measure from shoulder seam to sleeve opening.
Clear POM instructions reduce measurement disputes.
10. Construction Details
The construction section explains how the garment should be assembled.
It may include:
Seam type
Stitch type
Stitch density
Seam allowance
Hem construction
Neck construction
Reinforcement
Bartack locations
Overlock details
Coverstitch details
For example:
4-thread overlock on side seams
Twin-needle coverstitch at sleeve hem
Neck rib attached with overlock
Shoulder tape reinforcement
These instructions can be simple or highly detailed depending on the product.
11. Stitching Instructions
Stitching affects both appearance and durability.
A tech pack may specify:
Thread type
Thread colour
Stitch type
SPI
Decorative stitching
SPI means stitches per inch.
Higher or lower stitch density can influence appearance, seam strength, and fabric behaviour.
The correct stitching specification depends on garment type and fabric.
12. Print Details
If the garment includes printing, the tech pack should include clear artwork and placement instructions.
Important details can include:
Print method
Artwork file
Print size
Print colour
Placement
Distance from seams
Printing technique
For example:
Print Type: Screen PrintPrint Size: 20 cm × 25 cmPlacement: Centre FrontPosition: 8 cm below neck seam
Without exact placement instructions, prints may appear too high, too low, or off-centre.
13. Embroidery Details
For embroidery, include information such as:
Artwork
Size
Placement
Thread colour
Stitch type
Embroidery technique
For example:
Embroidery: Left Chest LogoSize: 6 cm wideThread Colour: WhitePlacement: 8 cm from centre front, 12 cm below shoulder
A physical embroidery sample may also be approved before bulk production.
14. Label Information
Garments may require several types of labels.
These can include:
Main brand label
Size label
Care label
Composition label
Country-of-origin label
The tech pack should specify:
Label size
Material
Colour
Placement
Artwork
Folding method
For example:
Main Label Placement: Centre back neck seam
Size Label Placement: Below main label
15. Care Label Information
Care instructions should match the actual garment and fabric.
Typical information may include:
Washing instructions
Drying instructions
Ironing instructions
Bleaching instructions
Dry-cleaning instructions
Care labels may also contain:
Fibre composition
Country of origin
Manufacturer information
Size
Applicable legal labelling requirements depend on the market where the garment is sold.
Brands should confirm the relevant rules for their destination market.
16. Trims and Accessories
Trims are all garment components other than the main fabric.
Examples include:
Zippers
Buttons
Snaps
Elastic
Eyelets
Drawstrings
Cord stoppers
Velcro
Buckles
The tech pack should define important details such as:
Size
Colour
Material
Supplier
Finish
For example:
Zipper: No. 5 Nylon ZipperColour: BlackLength: 65 cm
17. Packaging Instructions
Packaging can also be included in the tech pack or a separate packing manual.
Instructions may cover:
Folding method
Polybag size
Size sticker
Barcode
Hang tag placement
Carton quantity
Carton dimensions
Packing ratio
For example:
1 garment per polybag
Size sticker on upper right corner
20 garments per carton
Clear packaging instructions improve consistency during dispatch.
18. Artwork and Logo Placement
A manufacturer should never have to guess logo size or placement.
The tech pack can specify:
Artwork file
Logo width
Logo height
Placement coordinates
Distance from seam
For example:
Chest Logo: 8 cm wide
Placement: 7 cm below shoulder seam and 9 cm from centre front
This is much clearer than simply writing:
“Put logo on left chest.”
19. Reference Images
Reference images can help explain design intent.
They may show:
Fit
Stitching style
Pocket shape
Wash effect
Fabric texture
Print finish
Garment silhouette
However, reference images should support the technical instructions, not replace them.
A manufacturer still needs exact specifications.
20. Sample Comments
During development, the first sample is rarely perfect.
The tech pack may be updated with sample comments.
For example:
Increase body length by 2 cm
Reduce sleeve opening by 1 cm
Move logo 3 cm upward
Make neckline 1 cm wider
Change rib colour to match body
Keeping sample comments documented helps prevent the same mistake from being repeated.
21. Revision History
Tech packs change during development.
A revision history records those changes.
Example:
Version
Date
Changes
V1
01-10-2026
Initial specification
V2
05-10-2026
Sleeve length updated
V3
08-10-2026
Print placement approved
This helps ensure the factory is using the latest file.
Always use clear version control.
What Is a Tech Pack BOM?
The BOM, or Bill of Materials, is one section of the tech pack.
It lists everything required to manufacture the garment.
For a hoodie, the BOM may include:
Main fleece fabric
Rib
Drawcord
Eyelets
Zipper
Main label
Size label
Care label
Thread
Polybag
Hang tag
This helps with costing, sourcing, and production planning.
What Is a Garment Specification Sheet?
A garment specification sheet mainly focuses on measurements.
A tech pack is broader.
It can include:
Design
Construction
Fabric
Measurements
Colours
Trims
Labels
Artwork
Packaging
So the measurement sheet is usually one part of the full tech pack.
Tech Pack vs Fashion Sketch
These are not the same.
Fashion Sketch
Shows the creative idea and appearance.
Tech Pack
Explains how to manufacture the garment.
A beautiful fashion illustration may inspire the product, but the factory still needs technical details.
Tech Pack vs Sample Garment
A physical sample can communicate many details, but it should not always replace documentation.
Samples can be lost, damaged, or misunderstood.
A tech pack creates a written technical record.
For best results, brands often use both:
Approved Sample + Approved Tech Pack
Why New Clothing Brands Should Use Tech Packs
New brands sometimes think tech packs are only necessary for large companies.
That is not true.
Tech packs can be especially useful for smaller brands because production mistakes can be expensive.
Benefits include:
Better Communication
The factory receives clear instructions.
Fewer Sample Corrections
Detailed specifications can reduce avoidable mistakes.
More Accurate Costing
Factories can understand materials and construction before quoting.
Consistent Production
The same specifications can be followed across different batches.
Easier Quality Control
Finished garments can be checked against approved standards.
Better Supplier Comparison
Brands can send the same specifications to multiple manufacturers for comparable quotations.
Common Tech Pack Mistakes
1. Missing Measurements
Do not rely only on sketches.
Include actual garment measurements.
2. Unclear Fabric Details
Writing only “polyester” or “cotton” is not enough.
Include relevant composition, GSM, structure, and finish.
3. No Artwork Dimensions
Always specify print or embroidery size and placement.
4. No Tolerances
Factories need to know acceptable measurement variation.
5. Poor Version Control
Make sure everyone is working from the latest revision.
6. Confusing Body and Garment Measurements
Clearly state what is being measured.
7. No Sample Comments
Record every correction made during development.
8. Using Only Reference Images
Reference photos are helpful, but exact technical instructions are still necessary.
Do You Need Special Software to Make a Tech Pack?
No.
Tech packs can be created using:
Adobe Illustrator
Adobe InDesign
Excel
Google Sheets
Figma
Tech pack software
Product lifecycle management systems
For a new brand, even a well-organized spreadsheet and technical drawing can work.
The important thing is clarity and completeness.
Simple Tech Pack Structure for Beginners
A beginner tech pack can start with these sections:
Cover Page
Style Information
Front and Back Sketch
Fabric Specification
Colour Information
Bill of Materials
Measurement Chart
Point of Measurement Guide
Construction Details
Print or Embroidery Details
Labels
Packaging
Sample Comments
Revision History
You can add more detail as the garment becomes more complex.
Example Tech Pack for a Basic T-Shirt
Imagine a brand developing a basic polyester sports T-shirt.
Style Information
Style: Performance TeeStyle No: PT-001Fit: RegularCategory: Unisex Sportswear
Fabric
100% Polyester160 GSMInterlock KnitQuick-Dry Finish
Colour
Black
Measurements
M Size:
Chest Width: 52 cmBody Length: 70 cmShoulder: 46 cmSleeve Length: 22 cm
Construction
4-thread overlock side seamsCoverstitch sleeve hemRib neck
Branding
Left chest logo8 cm width
Label
Main label at back neckSize label below
Packaging
One piece per polybag
This is a simplified example, but it demonstrates how technical information is organized.
When Should a Tech Pack Be Created?
The tech pack should ideally be prepared before sampling begins.
A common workflow is:
Design Idea → Tech Pack → Fabric Selection → Sample Development → Fit Review → Corrections → Final Approval → Bulk Production
The tech pack is updated throughout this process.
The final approved version becomes a production reference.
Can a Manufacturer Create the Tech Pack?
Yes.
Some garment manufacturers can help create technical specifications based on:
Reference garment
Sketch
Sample
Design brief
However, the brand should still review and approve the final measurements, materials, and construction.
Do not assume the manufacturer automatically understands your intended fit.
How Detailed Should a Tech Pack Be?
The level of detail depends on garment complexity.
A basic T-shirt may require fewer instructions.
A technical jacket may require detailed information about:
Multiple panels
Lining
Zippers
Waterproof seams
Hood construction
Pockets
Trims
Performance testing
A good rule is:
If a manufacturer could misunderstand something, document it.
Frequently Asked Questions
What does tech pack mean in clothing?
A tech pack is a technical document containing the information required to develop and manufacture a garment.
Is a tech pack necessary for clothing production?
It is not always legally required, but it is highly useful for professional garment development and manufacturing.
What information is included in a tech pack?
Typical information includes sketches, measurements, fabric, trims, colours, stitching, labels, artwork, packaging, and sample comments.
What is BOM in a tech pack?
BOM means Bill of Materials. It lists all fabrics, trims, labels, accessories, and other components required to make the garment.
Who creates the tech pack?
It may be created by a fashion designer, technical designer, product developer, merchandiser, manufacturer, or brand owner.
Can beginners create a tech pack?
Yes.
Start with basic technical sketches, fabric details, measurement charts, construction notes, and branding information.
Is a tech pack the same as a size chart?
No.
A size chart is only one part of garment sizing information.
A tech pack contains much more information about the entire garment.
Does the tech pack change during sampling?
Yes.
Measurements, trims, artwork, and construction may be updated based on sample reviews.
Final Thoughts
A garment tech pack is one of the most important communication tools between a clothing brand and a manufacturer.
It turns a design idea into clear technical instructions.
A good tech pack should explain:
What the garment should look like
What fabric should be used
How the garment should be measured
How it should be constructed
Where branding should be placed
Which labels and trims should be used
How the product should be packed
The more clearly these details are documented, the easier it becomes to develop accurate samples and maintain consistency during production.
For new clothing brands, creating a tech pack may initially feel complicated.
But even a simple, well-structured tech pack is far better than relying on verbal instructions alone.
Clear specifications reduce confusion, improve production accuracy, and help brands build better garments.