The stage where aspiring directors dreaming of launching their own fashion brands feel most frustrated and give up is physical garment production. It often seems that clothes can be made effortlessly with just an attractive design sketch, but the moment you approach factories, you are immediately confronted with unfamiliar terminology and the barrier of high Minimum Order Quantities (MOQs).
Today, based on real-world experiences from active brand directors, we transparently reveal the complete 9-step in-house clothing production process from fabric sourcing to final product manufacturing, along with cost-saving tips and an itemized cost breakdown for producing 120 jumpsuits.
1. Steps 1–3: From Item Conception to Pattern Development
The first step in custom manufacturing is fleshing out your idea and converting it into a garment blueprint.
Step 1: Item Conception
First, conceptualize what kind of garment you want to make. Clearly define the category—such as knitwear, pants, skirts, blouses, or tank tops—and refine your design details.
Step 2: Fabric Sourcing
Once the design is finalized, you need to head out to the Dongdaemun General Fabric Market to do fieldwork. Collect numerous fabric swatches (material samples) displayed in front of wholesale shops, then meticulously compare fabric types, hand feel, and unit prices back at your office or design studio.
Step 3: Pattern Making
Factories cannot construct garments from sketches or sample photos alone. You must visit a pattern studio, explain your design concept, and commission a pattern—the technical blueprint essential for precision fabric cutting.
2. Steps 4–6: Fabric Analysis, Sample Procurement & Trims Sourcing
Once the technical blueprint is ready, it is time to analyze fabric properties and source trims to prepare for real-world garment assembly.
Step 4: Sample Fabric Procurement
Calculate the fabric consumption (yield per piece), then purchase 1 to 2 yards of sample yardage for initial prototype making. Wholesalers do not provide fabric free of charge initially, so paying upfront is standard. When sourcing fabric, keep this 3-point checklist in mind:
Fabric Weight (Thickness): Always touch and inspect the fabric each season to ensure its weight matches the target season.
Dye Lot Variance (Shade Lot Differences): Even with identical oatmeal colorways of the same fabric, subtle differences in lightness or yellowish undertones occur across production runs (lot numbers). Rolls with excessive variation are considered defective, so verify consistency prior to bulk production.
Lab Dip (BT) Verification: Before starting bulk dyeing, inspect Lab Dip (BT) sample swatches that show delicate variations in value and chroma to prevent color shifts in the final product.
Step 5: Sewing Factory Consultation
Partner with a sewing factory specialized in your apparel category (circular knit/jersey, woven, denim, etc.). Discuss initial production minimums (factories usually define one fabric bolt per size as a baseline) and negotiate Cut-Make-Trim (CMT) labor costs with the factory owner.
Step 6: Sourcing Decoration Facilities for Embroidery/Printing
If your clothing incorporates added design elements like screen printing, embroidery, or custom patches, contact specialized embroidery and printing facilities separately from the sewing factory to coordinate unit pricing and technical feasibility.
3. Steps 7–9: From Sample Completion to Main Production
This is the core phase where all prepared raw materials, trims, and blueprints come together to produce the initial sample and advance into bulk manufacturing.
Step 7: Sample Fitting & Prototyping
Cut the sample fabric, route the panels through embroidery or printing first, and then send them to the sewing facility for assembly. Try on the physical sample yourself to evaluate whether the desired silhouette and fit (e.g., oversized vs. tailored fit) were achieved, noting any revisions needed.
💡 Practical Tip for Negotiating CMT Labor Costs
Sewing factories determine processing costs based on the craftsmanship and sewing complexity of the physical sample you present. Bringing a clean, high-precision prototype crafted by a specialized sample room—rather than a rough in-house mock-up—gives you leverage in price negotiations.
Step 8: Size Grading
Once you approve the initial sample (e.g., Size L), commission pattern grading from the pattern room (e.g., grading down 2 inches for Size M and grading up 2 inches for Size XL) to prepare patterns across all production sizes.
Step 9: Main Bulk Production
With raw materials sourced, factory lines scheduled, and grading completed, issue the formal production order to initiate bulk manufacturing.
4. [Real Cost Breakdown] Actual Expenses for Producing 120 Dresses
How are real-world apparel production costs structured? Here is a transparent, line-item cost breakdown from an actual production run of 120 dresses (3 sizes, 2 colorways / 20 pieces per size) to demystify manufacturing expenses for prospective founders.
Category | Item Details & Calculation | Total Cost (KRW) |
|---|---|---|
Main Fabric | Yield: 1.9 yards/pc (incl. loss) × 120 pcs = 228 yards × 6,000 KRW/yard | 1,368,000 KRW |
Pocket Lining | 6 yards total × 5,000 KRW/yard | 30,000 KRW |
Ribbing / Elastic | 2 rolls total for cuff/ankle/waist elastic (12,000 KRW/roll) | 24,000 KRW |
Zippers | High-quality YKK Vislon zipper & slider labor approx. 900 KRW/pc × 120 pcs | 108,000 KRW |
Labels | Neck main label & care label bundled batch (1,000 printed labels minimum) | 250,000 KRW |
Pattern & Sample | Pattern draft, size grading, and initial physical prototype development | 350,000 KRW |
CMT Labor | Sewing labor 8,500 KRW/pc × 120 pcs (packaging excluded) | 1,020,000 KRW |
Grand Total | Net production budget excluding taxes and incidental fees | 3,150,000 KRW |
- Final Net Unit Cost: Approx. 26,250 KRW (Total 3,150,000 KRW ÷ 120 pcs)
💡 Practical Advice for Foolproof Factory Sourcing
1. Filter Out Unusually Low Labor Quotes
When you establish a market price range across multiple factory meetings (e.g., 8,000 to 15,000 KRW), avoid facilities offering suspiciously cheap quotes (e.g., a single shop offering 5,000 KRW). Once fabrics and trims are delivered to the factory floor, there is a substantial risk they will demand mid-production price increases (such as requesting an extra 1,000 KRW per piece). Canceling contracts mid-production leads to severe losses in raw material and lead time, leaving you trapped with no alternative but to pay.
2. Prioritize Communication and Rapport Over Technical Skill Alone
Factories with older, veteran artisans may deliver exceptional quality, but rigid communication and reluctance to accept feedback can turn sample revisions into a struggle for new directors. Partnering with a cooperative, warm, and responsive factory manager is the true shortcut to steadily building your brand over the long haul.
Mastering the economics of materials and labor while building reliable partnerships—rather than aggressively squeezing unit margins—is the most effective way to protect profitability and sustainably run a high-quality fashion brand.
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