🧥 The Difference Between a Tech Pack and a Specification Sheet : Tech Pack vs Spec Sheet
In the world of fashion manufacturing, two terms are often used interchangeably — Tech Pack and Specification Sheet (Spec Sheet).
But here’s the truth — while they’re related, they serve very different purposes.
If you’re a fashion designer, startup brand, or clothing manufacturer, understanding this difference can save you time, money, and production errors.
Let’s break it down 👇
🧷 What is a Tech Pack?
A Tech Pack (Technical Package) is the blueprint of your garment.
It’s a complete document that tells your manufacturer exactly how to bring your design to life — from the first sketch to the final stitch.
A Tech Pack typically includes:
- Technical sketches (Flats): Front, back, and detailed views of your design.
- Bill of Materials (BOM): List of fabrics, trims, buttons, zippers, labels, and accessories.
- Measurements & Size Chart: Base size measurements and grading rules for all sizes (S, M, L, XL, etc.).
- Construction Details: Stitch types, seam placements, and finishing methods.
- Colors & Prints: Colorways, print placements, and Pantone codes.
- Branding & Labels: Logos, care labels, and tag placements.
- Packaging Instructions: Folding, tagging, and packing specifications.
👉 In short, a Tech Pack = the entire manual that ensures your manufacturer makes your product exactly how you imagined it.
📏 What is a Specification Sheet?
A Specification Sheet (Spec Sheet) is a component of a Tech Pack — it focuses specifically on measurements and sizing details.
It provides:
- Measurement points (like chest, sleeve length, waist, etc.)
- Tolerances (acceptable variation in measurements)
- Grading increments between sizes
Think of it as the numerical data sheet for your garment.
🔍 Tech Pack vs Spec Sheet — Key Differences
| Feature | Tech Pack | Specification Sheet |
|---|---|---|
| Purpose | Complete garment blueprint | Measurement and sizing reference |
| Includes | Design sketches, BOM, construction, branding, packaging | Only measurements and tolerances |
| Used by | Designers, manufacturers, pattern makers, QC teams | Pattern makers and production teams |
| Scope | Comprehensive | Limited |
| Outcome | Helps create the full garment | Helps ensure correct sizing |
🧠 Why This Difference Matters
If you send only a spec sheet to your manufacturer, they’ll know how big your garment should be —
but not how it should look or be made.
A Tech Pack, on the other hand, tells them everything —
✅ what materials to use
✅ how to stitch and finish
✅ how to label and package
✅ and how the final product should appear.
That’s why fashion brands that use complete tech packs experience fewer mistakes, faster sampling, and smoother production.
💡 Final Thoughts
A Specification Sheet gives measurements.
A Tech Pack gives meaning.
If you’re building a serious fashion brand, sending your manufacturer a full Tech Pack instead of just a spec sheet is the difference between guesswork and precision.
At Tech Pack Genius, we help designers and fashion startups create detailed, production-ready tech packs within 72 hours — so your ideas can move from sketches to samples without confusion or costly errors.
🧵 Ready to create your Tech Pack?
👉 Visit www.techpackgenius.com
Let’s turn your design ideas into factory-ready files. 🚀