Manufacturing Guide · 16 May 2026

The Complete Guide to Knitwear Sampling: From Tech Pack to Finished Sample

Everything you need to know about the knitwear sampling process, from creating a tech pack to approving the final sample.

By Felix Zheng

The sampling stage is where your design comes to life. For knitwear, this process is particularly nuanced because fabric structure and garment shape are created simultaneously during the knitting process, unlike woven garments where fabric is cut and sewn. This guide walks through the complete sampling process from tech pack to final approval.

Step 1: Preparing Your Tech Pack

A good tech pack should include:

  • Flat sketch with front and back views
  • Measurements in a size specification sheet
  • Yarn specifications (fiber content, yarn count, twist)
  • Stitch details (jersey, rib, cable, jacquard)
  • Color references (PANTONE codes preferred)
  • Trim details (buttons, zippers, labels)
  • Packaging requirements

The more details you provide, the fewer sampling rounds you’ll need.

Step 2: Yarn Selection

Your choice of yarn dramatically affects the final garment. Consider:

FactorImpact
Fiber contentHand feel, care requirements, cost
Yarn countFabric weight and drape
TwistDurability and stitch definition
Dye methodColor consistency, minimum dye lots

We maintain relationships with major yarn suppliers to source the right material for your design.

Step 3: Gauge Selection

Gauge determines the fineness of your knit:

  • 3GG-5GG: Chunky, quick-knit pieces with visible stitch texture
  • 7GG-9GG: Mid-weight, versatile for most sweater styles
  • 12GG-14GG: Fine knit, suitable for lightweight tops and layering pieces

Your gauge choice affects production time, yarn consumption, and final garment weight.

Step 4: Sample Development (7-10 Days)

Once the tech pack is finalized, here is what happens:

  1. Pattern programming: Your design is converted into machine instructions
  2. Yarn preparation: Selected yarn is prepared and tested
  3. Knitting: The garment pieces are knitted on computerized machines
  4. Linking: Pieces are joined together using specialized linking machines
  5. Finishing: Washing, steaming, pressing to achieve final dimensions
  6. Quality check: Inspection against your tech pack specifications

Step 5: Sample Review

Check these key points when reviewing your sample:

Fit
Does it match the spec sheet measurements?
Hand feel
Does the fabric feel as expected?
Stitch quality
Consistent tension, no dropped stitches
Color
Matches your PANTONE reference
Finish
Clean seams, proper edge finishing

Step 6: Revisions and Approval

Most collections require 1-2 rounds of sampling revisions. Common adjustments include:

  • Fit modifications (sleeve length, body length)
  • Tension adjustments (fabric too loose or tight)
  • Color corrections
  • Trim changes

Sampling Timeline Summary

StageDuration
Tech pack preparation1-3 days
Yarn sourcing2-5 days
Sample knitting & finishing7-10 days
Review & revisions3-5 days per round
Final approval1 day

Total: approximately 2-3 weeks from design to approved sample.


Ready to start your sampling process? Contact our team to discuss your collection.

sampling tech-pack production design quality

Work with JIERQI

Knitwear production in Shantou from 100 pieces per design. Sampling 7–10 days, AQL 2.5 inspection.

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