Understanding Fabric Quality: A Buyer's Guide

You can fix a bad seam. You can re-cut a bad pattern. You cannot fix a bad fabric. Fabric is the one input that, once approved for bulk, decides how your customer feels about your brand when the garment leaves the package.

Why fabric is 80% of the garment

Customers remember the hand-feel long after they have forgotten the cut. Returns, replacements and bad reviews cluster around fabric failures — pilling, bleeding, shrinking, odd drape — far more often than around stitching. Spending an extra half-hour with your sourcing lead before a PO saves entire weeks of fire-fighting after shipment.

GSM and weight

GSM (grams per square metre) is a shorthand for weight, not quality. A 120 GSM cotton voile feels featherlight and drapes beautifully but is see-through; a 280 GSM twill feels structured and holds pleats but is heavy on the body. Pick GSM based on the use case, not the label.

• Dresses, blouses: 100-160 GSM
• Shirts, light tops: 120-180 GSM
• Co-ords, trousers: 180-240 GSM
• Outerwear: 240 GSM and above

Composition and blends

A blend is not a compromise — it is a trade-off. 100% cotton breathes beautifully but wrinkles; a 95% cotton / 5% elastane blend keeps the comfort and adds recovery. 100% linen is dreamy in summer but creases as soon as you sit down; a linen-viscose blend gives 80% of the look with half the wrinkling. Ask your supplier to walk you through the trade-off, don't let marketing words like 'premium' or 'luxury' do the thinking.

The tests that actually matter

• Shrinkage test — wash, dry and measure. Anything above 5% is a red flag for apparel.
• Colour-fastness to washing, light, rubbing and perspiration (AATCC or ISO).
• Pilling resistance — especially on knit and wool-blend fabrics.
• GSM verification with a calibrated scale, not the mill's claim sheet.
• Tensile and tear strength for heavier woven fabrics.

Questions to ask your supplier

• Which mill is this from and can I see their last three shipments?
• What is the minimum roll quantity and the lead time for a top-up?
• Is the fabric pre-shrunk / sanforised, or do I need to plan a wash stage?
• What is your return policy on fabric defects — do I own the risk or do you?
• Is there an OEKO-TEX certified version for my export markets?

A supplier that answers every one of these without flinching is a supplier worth working with. A supplier who hedges on any of them is the one you will be arguing with three months later, container already on the water.