Fabrics & Materials Sourcing

Real-world analogy

What is it?

Fabric sourcing is the process of finding, evaluating, and purchasing the raw materials that will become your garments. It involves selecting the right fiber content, weight, and finish for your designs, then finding reliable suppliers who can deliver consistent quality at viable prices. This step directly determines your product quality, production cost, and profit margins.

Real-world relevance

Everlane built their entire brand around radical transparency in materials sourcing. They publish the exact factory and material cost for every product, showing customers they use premium Supima cotton and Italian leather while keeping prices fair. This transparency-first approach to sourcing helped them grow to over $100 million in revenue. On the flip side, many fast fashion startups have failed because they chose the cheapest polyester and ended up with products that pilled after one wash, generating massive returns and killing their reputation.

Key points

• Know Your Fabric Families — Natural fibers (cotton, silk, linen, wool) breathe and feel luxurious but cost more and wrinkle easily. Synthetics (polyester, nylon, spandex) are durable, affordable, and wrinkle-resistant but can feel cheap. Blends combine the best of both worlds — a 95% cotton / 5% spandex tee gives comfort plus stretch.
• Fabric Weight Matters — Fabric weight is measured in GSM (grams per square meter). A lightweight summer tee is around 120-150 GSM, a standard tee is 160-200 GSM, and a heavyweight hoodie is 350-450 GSM. Always specify GSM in your orders — 'medium weight' means different things to different suppliers.
• Understand Fabric Properties — Drape is how fabric falls and flows — jersey drapes well, canvas does not. Stretch and recovery determine if fabric bounces back after being pulled. Pilling resistance matters for longevity. Colorfastness ensures dyes don't bleed or fade after washing.
• Sourcing Channels — Fabric markets (like LA's Fashion District, Guangzhou, or Dongdaemun in Seoul) let you touch and compare. Online platforms (Alibaba, FabricSpot, Mood Fabrics) offer convenience. Going direct to mills gets you the best price but requires high MOQs (usually 1,000-3,000 yards minimum).
• MOQs and Minimums — Fabric MOQs (Minimum Order Quantities) vary wildly. Stock fabrics from wholesalers might have 1-5 yard minimums. Custom-dyed fabrics from mills start at 500-3,000 yards. Tip: start with stock fabrics in standard colors to keep your initial investment low.
• Always Test Before Ordering — Order swatch cards or sample yardage (1-3 yards) before committing. Wash-test your fabric at least 3 times to check shrinkage, color bleeding, and pilling. A fabric that shrinks 8% after washing will make your size S fit like an XS — disaster.
• Shrinkage Is Your Hidden Enemy — Pre-shrunk fabric typically still shrinks 2-3%. Regular cotton can shrink 5-10%. Always factor shrinkage into your patterns. If you don't account for it, your entire production run could be unwearable. Ask your supplier for the exact shrinkage percentage and verify it yourself.
• Sustainable Materials Are a Selling Point — Organic cotton, Tencel (lyocell), recycled polyester, hemp, and deadstock fabrics appeal to eco-conscious consumers. GOTS certification for organic cotton and OEKO-TEX for chemical safety are the gold standards. Sustainability can justify a 20-40% price premium.
• Build Supplier Relationships — Don't just chase the cheapest price. Reliable suppliers who deliver on time, maintain consistent quality, and communicate well are worth paying 10-15% more. Start with 2-3 suppliers and narrow down to your best partner over time.
• Keep a Fabric Library — Save labeled swatches of every fabric you source with details: supplier, price per yard, GSM, composition, shrinkage rate, lead time. This library becomes invaluable when planning future collections and comparing options quickly.

Code example

=== FABRIC EVALUATION SCORECARD ===

Fabric: ________________
Supplier: ______________
Price/yard: $___________

SCORE EACH 1-5:

Quality Metrics:
  [ ] Hand feel (softness, texture)     ___/5
  [ ] Weight (GSM matches spec)         ___/5
  [ ] Drape (appropriate for design)    ___/5
  [ ] Stretch & recovery                ___/5
  [ ] Colorfastness (wash test)         ___/5
  [ ] Shrinkage (< 3% target)          ___/5
  [ ] Pilling resistance                ___/5

Supplier Metrics:
  [ ] Price competitiveness             ___/5
  [ ] MOQ flexibility                   ___/5
  [ ] Lead time (weeks: ___)            ___/5
  [ ] Sample availability               ___/5
  [ ] Communication quality             ___/5
  [ ] Certifications (GOTS/OEKO-TEX)    ___/5

TOTAL SCORE:    ___/65
THRESHOLD:      Pass = 45+  |  Review = 35-44  |  Fail = <35

WASH TEST LOG:
  Wash 1: Shrinkage ___%, Color change: Y/N, Pilling: Y/N
  Wash 2: Shrinkage ___%, Color change: Y/N, Pilling: Y/N
  Wash 3: Shrinkage ___%, Color change: Y/N, Pilling: Y/N
  Cumulative shrinkage: ___%

DECISION: [ ] APPROVED  [ ] NEEDS RETEST  [ ] REJECTED

Line-by-line walkthrough

1. 1. The scorecard header captures the fabric name, supplier, and price per yard for easy reference and comparison across multiple fabrics.
2. 2. Quality Metrics section rates 7 physical properties on a 1-5 scale. Hand feel and drape are subjective but critical — customers judge quality by touch before anything else.
3. 3. Colorfastness, shrinkage, and pilling resistance require actual wash testing. Never skip these — they reveal problems that only show up after the customer wears and washes the garment.
4. 4. Supplier Metrics evaluate the business relationship: pricing, flexibility, reliability, and certifications. A great fabric from an unreliable supplier is worse than a good fabric from a great supplier.
5. 5. The scoring threshold system (Pass 45+, Review 35-44, Fail <35) out of 65 total gives you a quick go/no-go decision instead of agonizing over every fabric choice.
6. 6. The Wash Test Log tracks shrinkage and problems across 3 wash cycles. Cumulative shrinkage over 3% is a red flag — it means your finished garments will not fit as intended.
7. 7. The final DECISION checkbox forces a clear verdict. Avoid 'maybe' — either a fabric meets your standards or it doesn't.

Spot the bug

FABRIC ORDER CALCULATION:
T-shirt design needs 1.5 yards per unit
Planned production: 500 units
Fabric needed: 500 x 1.5 = 750 yards
Fabric cost: $4.50/yard
Total fabric cost: 750 x $4.50 = $3,375
Ordering exactly 750 yards from supplier.

Explain like I'm 5

Fun fact

Hands-on challenge

More resources

• Fabric Sourcing 101: A Complete Guide for Fashion Startups (Maker's Row)
• Online Fabric Sourcing Platforms Compared (Common Objective)
• Understanding Fabric Weight: GSM Guide (Contrado)