Understanding the Tech Pack Requirements for Factory Quoting
When you approach a garment manufacturer for a quote, the accuracy and completeness of your tech pack directly determine the speed and reliability of the pricing you receive. A well-prepared tech pack minimizes back-and-forth communication, reduces the risk of costly sampling errors, and helps factories allocate resources efficiently. This guide outlines the essential components and best practices to ensure your technical package is factory-ready.
Core Elements Every Tech Pack Must Include
Factories rely on precise data to calculate material consumption, labor time, and production complexity. Missing or ambiguous information often leads to inflated quotes or inaccurate lead times. Below are the non-negotiable sections your tech pack should contain:
- Bill of Materials (BOM) – A complete list of all fabrics, trims, threads, labels, and packaging materials with supplier codes, colors, and widths.
- Technical Flat Sketch – A 2D front/back view with exact measurements, seam types, and construction callouts. Include stitch density and needle specifications.
- Measurement Spec Sheet – A size-specific table with point-of-measure (POM) tolerances. Include grade rules for multi-size production.
- Construction Details – Step-by-step notes on assembly sequence, seam finishes, and reinforcement zones. Highlight critical-to-quality (CTQ) areas.
- Packaging and Labeling Instructions – Specify hang tags, poly bag dimensions, barcode placement, and carton markings.
How to Structure Your Measurement Spec Sheet
Factories use measurement charts to program cutting machines and set sewing jigs. Ambiguous or incomplete measurements are a primary cause of sample rejection. Use the following standardized format:
| Point of Measure | Size S (cm) | Size M (cm) | Size L (cm) | Tolerance (± cm) |
|---|---|---|---|---|
| Body Length (HPS to hem) | 68.5 | 71.0 | 73.5 | 0.5 |
| 1/2 Chest Width (2.5 cm below armhole) | 52.0 | 54.5 | 57.0 | 0.5 |
| Shoulder Width (seam to seam) | 44.0 | 46.0 | 48.0 | 0.3 |
| Sleeve Length (shoulder point to cuff) | 61.0 | 63.5 | 66.0 | 0.5 |
Tip: Always include a "tolerance" column. Factories use this to determine whether a deviation is acceptable without requiring a new quote.
Providing Clear Material and Trim Specifications
Incomplete BOMs are the top reason for quote revisions. For each material, include the following data points:
- Fabric: Composition, weight (GSM/Oz), width, color code, and finishing requirements (e.g., enzyme wash, anti-pilling treatment).
- Thread: Ticket size, material (polyester, cotton-wrapped), and color matching standard.
- Zippers and Buttons: Length, tooth type, slider finish, and placement diagram.
- Labels: Care label content, brand label size, and heat transfer versus sew-on instructions.
If you are sourcing materials from a specific supplier, attach their technical datasheet. This allows the factory to verify availability and lead times before quoting.
Including Grade Rules and Size Ratios
Most factories quote based on the labor and material required for a standard size run. Without grade rules, they will assume the largest size, which inflates your cost. Provide a clear grade rule table showing incremental changes between sizes:
| Measurement Point | Grade Rule (cm per size) |
|---|---|
| Body Length | +2.5 |
| 1/2 Chest | +2.5 |
| Sleeve Length | +1.5 |
| Neck Width | +0.5 |
Also, state the expected size ratio for production (e.g., 2:3:2 for S:M:L). This allows the factory to calculate marker efficiency and fabric utilization accurately.
Adding Visual Reference and Callouts
Text descriptions alone are rarely sufficient. Your tech pack should include annotated flat sketches with arrows pointing to specific construction details. For example:
- Indicate seam type (e.g., French seam, overlock, flat-felled) with a reference number.
- Show stitch count per inch (e.g., 12 SPI for main seams, 8 SPI for hemming).
- Highlight reinforcement areas such as bar tacks at pocket corners or crotch seams.
Pro tip: Use a consistent numbering system across all pages. If you reference "Detail A" on the sketch, ensure the same label appears in your construction notes. This prevents misinterpretation during the quoting process.
Packaging and Compliance Documentation
Factories must include packaging costs in their quote. Provide explicit instructions for:
- Poly bag type: Self-seal, header bag, or bio-degradable. Include thickness and dimensions.
- Carton specifications: Maximum weight, inner pack quantity, and labeling (e.g., "Made in Bangladesh" or country of origin).
- Compliance requirements: Oeko-Tex certification, REACH compliance, or specific wash care symbols. Attach relevant legal documents.
Missing compliance details often result in surprise charges later. Including them upfront ensures your quote reflects the true cost of production.
Common Mistakes That Delay Factory Quoting
- Missing seam allowance specifications – Factories will default to their standard, which may not match your design intent.
- Unclear color standards – Provide Pantone codes or physical swatches. "Light blue" is not acceptable.
- No tolerances on critical measurements – Factories will add their own, which may be too tight or too loose.
- Ignoring trim placement – Show exact positions for zippers, logos, and pockets. Even 1 cm deviation can affect fit.
Final Checklist Before Sending Your Tech Pack
Before you hit send, verify the following:
- All pages are labeled with a revision date and version number.
- Files are in a universally readable format (PDF + editable Excel for spec sheets).
- Contact information for technical queries is included.
- Sample approval timeline and quantity expectations are stated.
Remember: A complete tech pack does not guarantee the lowest quote, but it ensures the quote you receive is accurate, comparable, and actionable. Factories appreciate clarity and will often prioritize clients who provide well-organized documentation. Investing time upfront saves weeks of costly corrections during sampling and production.