Why Fabric Choice Matters
A T-shirt’s fabric decides how it feels on the body, how it washes, how it prints, and how long it lasts. Two shirts can look identical on a hanger yet behave completely differently after ten washes — the difference is almost always the fabric. Understanding a few basics helps you brief your manufacturer clearly and avoid costly surprises later.
Cotton: The Foundation
Most T-shirts start with cotton, but not all cotton is equal:
- Carded open-end cotton — the most economical option. The fibres are shorter, the hand feel is slightly rougher, and the surface pills more easily. It works well for budget promotional tees.
- Combed cotton — short fibres are combed out before spinning, leaving longer, smoother fibres. The result is a softer, stronger, more even fabric that prints cleanly.
- Ring-spun cotton — the yarn is continuously twisted and thinned, producing a fine, soft, durable yarn. Ring-spun combed cotton is the standard for quality retail T-shirts.
- Organic cotton — grown without synthetic pesticides and certified to standards such as GOTS. It costs more, but it matters to sustainability-focused brands and their customers.
Blends: Getting the Best of Both Worlds
Blending cotton with other fibres changes how a shirt performs:
- Cotton/polyester (typically 60/40 or 50/50) — better shape retention, less shrinkage, lower cost, and a slightly heathered look. This is the workhorse of the promotional industry.
- Tri-blends (cotton, polyester and rayon) — exceptionally soft with a vintage drape. Popular for fashion-forward retail tees.
- Performance blends — polyester-dominant fabrics with moisture-wicking finishes, designed for athletic and activewear.
Fabric Weight: Understanding GSM
Fabric weight is measured in grams per square metre (GSM). As a rough guide:
- 120–150 GSM — lightweight and breathable; ideal for summer fashion tees.
- 160–180 GSM — mid-weight; the most versatile range for everyday T-shirts.
- 200–220 GSM — heavyweight; a structured, premium feel that holds bold prints well.
Heavier is not automatically better. A 220 GSM tee feels stifling in a hot climate, while a 140 GSM tee is perfect for summer retail. Match the weight to the end use and the market you sell in.
Practical Tips Before You Order
Always approve a fabric swatch before bulk production, and wash-test your samples at least once. Ask your manufacturer for the exact fibre composition, GSM, and shrinkage figures — a professional factory will provide them without hesitation. Getting the fabric right at the start saves far more than it costs.