A Complete Guide for Fashion Brands and Startups
If you’re planning to manufacture custom denim — jeans, jackets, or shorts — a Tech Pack is one of the most important tools to communicate your design to the factory.
At Guangxi Xinen Garment Co., Ltd., we work with brands of all sizes, and many new designers ask:
“What exactly is a tech pack, and how do I create one for denim production?”
Here’s everything you need to know.
🧵 What Is a Denim Tech Pack?
A Tech Pack (technical package) is a blueprint that explains every detail of your denim product. It includes:
- Measurements and size specs
- Fabric and trim information
- Construction details
- Stitching, wash, labels, packaging
- Visual references or flat sketches
🎯 Think of it as the instruction manual your factory needs to bring your design to life — accurately and efficiently.
📋 Why a Tech Pack Is Essential
✅ Reduces miscommunication between you and the factory
✅ Speeds up sampling and production
✅ Ensures consistency in future reorders
✅ Prevents costly mistakes during sewing or washing
Even if you’re not a technical designer, having a basic tech pack saves time and money.
🧰 What to Include in a Denim Tech Pack
Here’s a simple checklist you can follow when preparing your denim tech pack:
1. Technical Flat Sketches
Clear, front & back black-and-white line drawings showing all details:
- Pockets
- Zipper/button fly
- Waistband
- Yoke and seams
- Stitch lines, rivets, bar tacks
📐 Optional: Add 3D CAD drawings or mockups if available.
2. Measurement Specs / Size Chart
Include a table with garment measurements for each size (e.g. S, M, L, XL). Key points:
- Waist, hip, inseam, rise, leg opening
- Tolerance (e.g., ±0.5 cm)
- Grading rules (how each size increases)
📏 Pro tip: Base your measurements on existing jeans that fit your target market.
3. Fabric & Trims Info
Specify materials used:
- Fabric type: 100% cotton, stretch denim, organic, etc.
- Weight: e.g., 12 oz, 14 oz
- Wash type: stone, enzyme, vintage, acid
- Buttons & zippers: size, color, placement
- Rivets, patches, labels
4. Construction & Stitching Details
Tell the factory how to build the jeans:
- Stitch type: single, double, chainstitch
- Seam finish: overlock, flat-felled
- Pocket construction
- Reinforcement points (e.g. bar tack at stress areas)
5. Label & Branding Placement
Show where your custom labels go:
- Inside woven label
- Back patch (leather or vegan)
- Hang tags
- Printed care label
🧷 Include artwork or logo files in vector format (.AI/.PDF).
6. Wash Reference Images
Denim wash is visual and very technical. Include:
- Real-life reference images
- Your own samples (if available)
- Notes on desired color fade, whiskering, distressing
💡 We can help you match your desired wash using lab dips and sample testing.
7. Packaging Requirements
If you have custom packaging, include:
- Hang tags, polybags, boxes
- Folding instructions
- Sticker or barcode placement
📩 Don’t Have a Tech Pack? We Can Help.
At Xinen Garment, we offer:
- In-house tech pack creation based on your idea or sketch
- Measurement assistance
- Sample development from photos or mood boards
- Full OEM/ODM production with design support
🧵 Just send us a reference sample or your drawing — we’ll take care of the rest.
🧠 Final Thoughts
A great denim tech pack makes your production faster, smoother, and more professional. Whether you’re producing baggy jeans, slim fits, or jackets, the clearer your details, the better your result.
Need help building your tech pack or launching your denim line?
Contact Guangxi Xinen Garment Co., Ltd. — we make your ideas wearable.
