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When a clothing brand develops a new T-shirt, hoodie, shirt, dress, or pair of trousers, the first approved pattern is usually created in only one size. For example, a brand may develop and perfect a Medium sample first. But customers do not all wear the same size. The brand may need to offer: XS S M L XL XXL 3XL So how does one approved pattern become a complete size range? The answer is garment grading. Garment grading is the process of systematically increasing or decreasing a base pattern to create additional clothing sizes while keeping the original design, balance, fit, and proportions as consistent as possible. For clothing brands, designers, buyers, merchandisers, and manufacturers, grading is a critical stage between fit approval and bulk production. This guide explains what garment grading is, how grade rules work, why different measurements change by different amounts, and how size-set samples are used to check the final result. What Is Garment Grading? Garment grading is the technical process of creating different garment sizes from an approved base pattern. For example, if Medium is the approved base size, grading can be used to create: Small Extra Small Large Extra Large XXL The pattern is not simply enlarged or reduced like an image. Instead, specific points on the pattern are moved according to predetermined grade rules. These adjustments may affect: Chest Waist Hip Shoulder Armhole Sleeve Garment length Neck opening Rise Thigh Leg opening The goal is to maintain the intended fit and design across the entire size range. Why Is Garment Grading Important? Without proper grading, clothing sizes can become inconsistent. For example: Small may become too narrow XL may become too long XXL shoulders may become excessively wide Sleeve lengths may increase too quickly Neck openings may become too large Good grading helps create a logical and wearable size progression. It also gives manufacturers a clear size specification to follow during cutting and production. What Is a Base Size? The base size is the original size used during garment development. For many adult garments, brands may choose: M L Size 8 Size 10 The exact base size depends on the target market and brand. The base size is usually: Patterned Sampled Fit tested Corrected Approved Only after the base size is approved should grading normally begin. Why Is Medium Often Used as a Base Size? Medium is commonly chosen because it sits near the centre of many size ranges. For example: S – M – L – XL – XXL If Medium is used as the base, the pattern can be: Graded down to Small Graded up to Large, XL, and XXL However, Medium is not mandatory. A brand may use Large or another size depending on the customer profile. What Is a Grade Rule? A grade rule defines how much a specific measurement changes between sizes. For example: Chest width: S = 50 cm M = 52 cm L = 54 cm XL = 56 cm In this example, the chest width increases by: 2 cm per size That +2 cm is part of the grade rule. But other measurements may increase differently. For example: Shoulder: +1 cm per size Sleeve length: +1 cm per size Body length: +1.5 cm per size Different measurements require different grade increments. Why Doesn't Every Measurement Increase by the Same Amount? Human bodies do not grow equally in every direction. When a person moves from one clothing size to another: Chest may increase more than shoulder Hip may increase more than length Sleeve may increase only slightly Neck width may barely change That is why a pattern cannot simply be scaled up proportionally. Professional garment grading uses different increments for different points. Simple Example of T-Shirt Grading Here is an illustrative 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 Sleeve Length 21 22 23 24 25 These measurements are examples only. A real brand should create its own grade rules based on: Customer body data Garment fit Fabric Brand sizing Market expectations What Is Pattern Grading? Pattern grading is the physical or digital adjustment of the garment pattern itself. For example, a T-shirt pattern contains: Front body Back body Sleeve Neck rib Each pattern piece contains important points. During grading, those points are shifted: Horizontally Vertically Sometimes in both directions This creates a larger or smaller version of the pattern. What Does a Grading Point Look Like? Imagine the shoulder point of a T-shirt pattern. To create a larger size, the shoulder point may move: Slightly outward Slightly upward or downward At the same time: Chest point moves outward Hem length moves down Armhole changes Sleeve head changes The exact movement is controlled by the grade rule. Common Methods of Garment Grading Garment grading can be done manually or digitally. 1. Manual Pattern Grading Traditional pattern makers may grade patterns by hand. They use: Rulers Grading squares Pattern paper Measurement calculations The pattern maker marks new size points around the base pattern. This method requires skill and experience. 2. Computerized Pattern Grading Many modern manufacturers use CAD software. CAD stands for Computer-Aided Design. Garment CAD systems can: Store patterns Apply grade rules Generate multiple sizes Create markers Prepare files for cutting Computerized grading improves speed and repeatability, especially when working with many styles. What Is Nested Grading? When several graded pattern sizes are displayed together, they are often shown as a nest. For example: S M L XL XXL The different pattern outlines appear around the base pattern. This helps technicians visually check how each size grows. Grading a T-Shirt A T-shirt may require grading at: Chest Shoulder Armhole Sleeve Neck Body length Bottom opening Each area must remain balanced. For example, increasing the chest without adjusting the armhole and sleeve can cause fit problems. Grading a Hoodie Hoodies are more complex because they may include: Body Sleeves Hood Kangaroo pocket Rib cuffs Bottom rib When grading a hoodie, all connected components must change correctly. For example: If the body becomes wider, the pocket may also need adjustment. The hood may need changes in: Height Width Neck seam length Grading Trousers and Track Pants Trouser grading may involve: Waist Hip Rise Thigh Knee Inseam Outseam Leg opening Incorrect grading can create problems such as: Tight thigh Excessively deep rise Wrong leg proportion Grading Women's Garments Women's garments may require additional attention to: Bust Waist Hip Dart placement Shoulder Garment length The relationship between these measurements is important for fit. What Is a Grade Nest? A grade nest is a visual group of all graded pattern sizes placed together. For example, the outline of: XS – S – M – L – XL may be shown in one pattern view. It allows the pattern maker to check whether: Lines are smooth Growth is consistent Proportions look correct What Is Size Grading in a Measurement Sheet? After pattern grading, the measurements are usually recorded in a graded specification sheet. Example: POM S M L XL XXL Chest 50 52 54 56 58 Length 68 70 72 74 76 Sleeve 21 22 23 24 25 This becomes part of the garment tech pack. How Is Grading Different From Sizing? These terms are related but different. Sizing Sizing defines the size system used by the brand. Examples: S, M, L 28, 30, 32 8, 10, 12 Grading Grading creates the actual pattern and measurement changes between those sizes. Sizing tells you what sizes exist. Grading tells you how each size changes. How Is Grading Different From Pattern Making? Pattern making creates the original garment pattern. Grading creates additional sizes from that approved pattern. The usual sequence is: Design → Base Pattern → Sample → Fit Approval → Grading → Size Set Why Fit Approval Should Happen Before Grading If the base pattern is wrong, every graded size will also be wrong. For example: If Medium is: Too tight Too long Poorly balanced grading that pattern will spread the same problem across all other sizes. That is why the base size should be approved before grading. What Is a Size Set Sample? After grading, the manufacturer may create garments in several sizes. This is called a size set. For example: S – M – L – XL – XXL The purpose is to check whether grading works correctly in real garments. Why Is Size-Set Checking Important? Grading may look correct on the computer but still create fit issues. A size set can reveal problems such as: S neck opening too small XL sleeve too long XXL body too wide L shoulder incorrectly shaped Physical sampling helps confirm whether the graded pattern works. Do All Sizes Need to Be Sampled? Not always. Some brands sample: All sizes Others may sample key sizes such as: Small Large XXL The correct approach depends on: Garment complexity Order size Risk Brand requirements For a new style, more comprehensive size-set checking is safer. Grading and Measurement Tolerance Grading defines the target measurement. Tolerance defines how much production variation is acceptable. Example: Target chest: 54 cm Tolerance: ±1 cm Acceptable production range: 53–55 cm Grading and tolerance should not be confused. How Fabric Affects Grading Fabric behaviour can influence how a graded garment fits. Important properties include: Stretch Recovery Shrinkage Drape GSM Structure A grading system developed for stable cotton jersey may not work the same way for highly stretchable sports fabric. The final size set should ideally be tested in the actual production fabric. Stretch Fabric and Negative Ease Some garments are intentionally smaller than the body because the fabric stretches. This is called negative ease. Examples include: Compression tops Leggings Performance wear Grading stretch garments requires understanding how the fabric behaves across different body sizes. Shrinkage and Grading Suppose a T-shirt shrinks after washing. If this is not considered during development, every graded size may become too small. Brands should understand: Length shrinkage Width shrinkage Wash behaviour before approving final measurements. Why Oversized Garments Need Their Own Grade Rules An oversized T-shirt should not simply use the same grade rules as a slim-fit T-shirt. Oversized garments may require specific changes in: Shoulder drop Chest Sleeve Armhole Length The goal is to preserve the oversized silhouette across all sizes. Why Plus Sizes May Need Different Grading In some size ranges, using one continuous grade rule from XS to 4XL may not produce the best fit. Larger sizes may require adjusted rules. This is because body proportions can change differently at larger size ranges. Brands may therefore use: Standard grade rules Plus-size grade rules depending on the target customer. What Is a Grade Break? A grade break occurs when the grading increment changes after a certain size. For example: S to XL: Chest +2 cm per size XXL and above: Chest +3 cm per size This may be used to better reflect body proportion changes. Grading for Kidswear Kidswear may use: Age Height Chest Waist Examples: 2–3 years 4–5 years 6–7 years Children's body proportions change significantly with age, so grading must account for growth patterns. Grading for Unisex Clothing Unisex garments require careful fit decisions. A unisex T-shirt should be designed around the intended target audience and fit concept. Brands should avoid assuming one standard men's pattern automatically works for everyone. Example: How One Medium T-Shirt Becomes Five Sizes Suppose Medium is approved as: Chest = 52 cmLength = 70 cmShoulder = 46 cmSleeve = 22 cm The brand sets these grade rules: Chest = ±2 cmLength = ±2 cmShoulder = ±1 cmSleeve = ±1 cm Then: Small Chest = 50 cmLength = 68 cmShoulder = 45 cmSleeve = 21 cm Large Chest = 54 cmLength = 72 cmShoulder = 47 cmSleeve = 23 cm XL Chest = 56 cmLength = 74 cmShoulder = 48 cmSleeve = 24 cm XXL Chest = 58 cmLength = 76 cmShoulder = 49 cmSleeve = 25 cm This is a simplified example. Real grading can involve many more POMs. Why Garment Length Should Not Increase Too Fast One common grading mistake is increasing garment length too much. For example, if every size increases by 3–4 cm in length, XXL may become excessively long. Grade rules need to preserve balance. Why Shoulder Grading Needs Care Shoulder width strongly affects appearance. Too much shoulder growth can make larger sizes look: Boxy Dropped Poorly proportioned This is especially important in: T-shirts Shirts Jackets Why Sleeve Grading Must Match the Armhole Sleeve and armhole patterns are connected. If the armhole increases but the sleeve cap does not change correctly, the garment may be difficult to sew or may fit badly. Pattern grading must preserve seam compatibility. Checking Seam Lengths After Grading After grading, pattern makers should ensure related seams still match. Examples: Front armhole and sleeve Side seams Hood and neckline Collar and neckline Waistband and waist opening This is called pattern balance or seam matching. Garment Grading in CAD Software Modern CAD systems can store grade rules for repeated use. This allows factories to: Grade patterns quickly Create size nests Modify grade rules Export cutting files However, software does not replace technical knowledge. Incorrect grade rules entered into software will still produce incorrect patterns. Garment Grading and Marker Making Once patterns are graded, they can be used for marker planning. A marker arranges pattern pieces efficiently on fabric. For example: S M L XL may be combined into one production marker according to the order ratio. Grading therefore directly supports cutting and fabric consumption planning. Grading and Fabric Consumption Larger sizes consume more fabric. A graded size range helps the factory estimate: Fabric usage Cost Marker efficiency For example, XXL usually requires more fabric than S. This affects garment costing. Common Garment Grading Mistakes 1. Grading Before Fit Approval Always perfect the base pattern first. 2. Scaling Every Measurement Equally Different measurements require different grade rules. 3. Copying Competitor Size Charts Your garment fit and customer may be different. 4. Ignoring Fabric Stretch Fabric behaviour affects fit. 5. Skipping Size-Set Samples Grading problems may only become visible in physical garments. 6. Using One Rule for Extremely Wide Size Ranges Large size ranges may require grade breaks. 7. Not Checking Pattern Balance Related seams must continue to match. Garment Grading Checklist Before approving graded patterns, check: Base fit approved Grade rules documented Chest progression Length progression Shoulder progression Sleeve progression Neck opening Armhole Seam matching Size-set fit Fabric shrinkage Measurement specification How New Clothing Brands Should Approach Grading If you are starting a clothing brand, you do not necessarily need to grade patterns yourself. A professional: Pattern maker Technical designer Garment manufacturer can handle grading. However, the brand should understand: What base size is being used What sizes are being created What grade rules are applied How the size set fits Do not approve grading without reviewing the final size measurements. Grading and Customer Size Charts Once garment grading is finalized, selected measurements can be converted into a customer-facing size chart. For example: Size Chest Width Length S 50 cm 68 cm M 52 cm 70 cm L 54 cm 72 cm XL 56 cm 74 cm Clearly state whether chest is: Flat width Full circumference This reduces customer confusion. Frequently Asked Questions What is garment grading? Garment grading is the process of increasing or decreasing an approved base pattern to create different clothing sizes. What is a grade rule? A grade rule specifies how much a pattern measurement changes between sizes. What is a base size? A base size is the original size used for pattern development and fit approval before grading. Is grading the same as resizing? Not exactly. Professional grading changes individual pattern points according to technical rules rather than simply scaling the whole pattern. Why are different grade rules used for different measurements? Human body proportions do not increase equally in every direction. What is a size set? A size set is a group of physical samples in multiple sizes used to check grading and fit. Can grading be done in software? Yes. Garment CAD software is widely used for pattern grading. Does fabric affect grading? Yes. Stretch, shrinkage, structure, and drape can influence how graded sizes fit. Final Thoughts Garment grading is the technical process that turns one approved pattern into a complete clothing size range. It begins with a properly developed base size. From there, pattern points are increased or decreased using specific grade rules. The goal is not simply to make every size bigger or smaller. The goal is to preserve: Fit Balance Proportion Design Comfort across the full size range. After grading, size-set samples should ideally be reviewed to confirm that the smaller and larger sizes work correctly. For new clothing brands, understanding grading helps improve communication with pattern makers and manufacturers and reduces the risk of inconsistent sizing. A good size range starts with a good base pattern and carefully planned grade rules.

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.