T Shirt Fabric Guide: Cotton, Polyester, Blends & More

Published September 17, 2026 · by the TShirtFactory team

Choosing t shirt fabric is the single most consequential decision in any OEM program — more than decoration method or pattern cut. The fabric determines hand-feel, drape, print clarity, shrinkage, durability and landed cost. As a working china t shirt factory producing for brands in 50+ countries, we walk buyers through this t shirt fabric guide every week. Here is the same information, condensed.

1. Why Fabric Drives Everything

A 180 GSM combed cotton tee and a 140 GSM poly-cotton tee can look identical in a product photo, yet feel, print and wear completely differently. Cotton absorbs moisture and holds ink — ideal for screen print and DTG. Polyester wicks moisture and resists wrinkles — ideal for performance and sublimation. Triblend (cotton + polyester + rayon) is the softest option but the hardest to print crisply. Pick the fabric around the use case, not the price.

2. The Main T Shirt Fabric Categories

100% Cotton (Open-End or Carded)

The promotional industry default. Affordable, available in huge volumes, accepts all print methods. Slightly rougher hand than combed cotton; visible fiber texture. Typical weight 140-180 GSM. Best for: events, giveaways, budget retail.

100% Combed Cotton (Ringspun)

The premium OEM default. Combing removes short fibers and aligns long ones, producing a smooth, soft surface that prints sharper and wears longer. Weights from 160 GSM (lightweight summer) to 220 GSM (heavy fashion tee). Best for: men's t shirt manufacturer china projects, brand retail, fashion fits.

Poly-Cotton Blend (65/35 or 60/40)

The workhorse for wholesale and uniforms. Cotton keeps breathability; polyester adds wrinkle resistance, shrinkage control and color fastness. Holds screen print well; DTG prints less vivid on dark colors. Best for: wholesale t shirts china, workwear, school uniforms.

100% Polyester (Performance)

Moisture-wicking, fast-drying, dimensionally stable. Sublimation prints vividly on white poly; dark poly requires cut-and-sew panels. Best for: sports, running, teams, sublimated fashion. Watch for pilling on low-grade poly.

Tri-Blend (Cotton + Polyester + Rayon)

The premium fashion fabric. Rayon adds drape and softness; poly adds strength; cotton adds printability. The texture is unmistakable — the "heather" retail tee feel. Harder to control shrinkage; sublimation prints muddy. Best for: lifestyle retail, premium private label.

Organic Cotton

GOTS-certified, grown without synthetic pesticides. Softer hand from longer fibers, defensible sustainability claim. 15-30% premium over conventional combed cotton. Best for: women's t shirt manufacturer china organic collections, eco brands.

3. Weight, GSM and Hand-Feel

GSM (grams per square meter) measures fabric weight. For t shirts the practical bands are:

• 120-150 GSM — sheer, lightweight summer tees; show-through on light prints
• 160-180 GSM — standard weight, the bulk of global OEM t shirts
• 190-220 GSM — heavy-weight, premium retail feel
• 240+ GSM — approaching sweatshirt territory

Higher GSM does not always mean better — it means denser, warmer and more expensive in raw material. Pick the band for your climate, market position and decoration method.

4. Shrinkage, Pre-Shrinking and Why It Matters

Unprepared cotton shrinks 5-8% on first wash; pre-shrunk (compacted) cotton shrinks 2-3%; polyester shrinks under 1%. Reputable OEM t shirt factory in china partners always specify pre-shrunk fabric for retail programs; otherwise grading has to over-size patterns to compensate, which complicates size consistency across batches.

5. Fabric and Print Method Compatibility

• Screen print — works on all of the above; best on cotton and blends
• DTG — best on 100% cotton; visible color shift on poly and triblend
• Heat transfer — universal but can feel plasticky on lightweight fabrics
• Sublimation — only on 100% polyester or poly-rich blends; for full-coverage prints
• Embroidery — best on heavier weights (180 GSM+); light fabrics pucker

Pairing fabric and decoration correctly is what separates a custom t shirt printing factory china from a screen-print shop. We treat them as one engineering decision.

6. Sourcing Fabric in China

China has the world's deepest knit-fabric supply. Combed cotton comes from Shandong and Hebei mills; poly and triblend from Zhejiang clusters (Shaoxing, Keqiao); organic cotton from Xinjiang and certified import channels. A working custom t shirt factory china holds fabric relationships that get small-batch sampling and color matching done in days, not weeks.

Conclusion

Pick fabric before decoration, before pattern, before marketing. Define weight, GSM, blend, certification and shrinkage requirement; then sample aggressively. If you need a partner that handles the whole chain — fabric sourcing, sampling, decoration, private label — TShirtFactory ships 100 pcs MOQ from our Dongguan plant with 7-day sampling.

Frequently Asked Questions

What is the best fabric for a t shirt?

For most OEM t shirt projects, 100% combed cotton at 180-200 GSM is the safest starting point: soft, breathable, printable across all decoration methods and competitively priced. For premium fashion fits, triblend or organic cotton delivers a softer hand; for performance wear, poly-cotton blend resists shrinkage and holds shape better.

What GSM is best for a t shirt?

120-150 GSM is lightweight summer/promo; 160-180 GSM is the standard weight most brands ship as their core tee; 200-220 GSM is heavy-weight and reads as premium. Anything above 240 GSM starts to feel like a sweatshirt body.

Combed cotton vs ringspun cotton — what is the difference?

Ringspun yarn is made by spinning fibers under tension to align them, producing a smoother and stronger yarn than open-end carded yarn. Combing is an extra step that removes short fibers before spinning, yielding an even smoother, more uniform surface. Combed ringspun cotton is the premium default for high-end t shirt OEM.

Does polyester t shirt fabric breathe?

Pure polyester does not absorb moisture but wicks it, so it feels cool during activity but can cling when static. Poly-cotton blends (60/40 or 50/50) keep cotton's breathability while improving wrinkle resistance and print durability — which is why most promotional t shirt factories default to blends.

Is organic cotton worth the premium for t shirts?

For eco-positioned brands, yes — GOTS-certified organic cotton removes pesticide and chemical concerns, often carries a softer hand due to longer fibers, and supports credible sustainability marketing. Expect a 15-30% fabric premium over conventional combed cotton at equivalent weight.

Need a fabric sample for your project? Send us your spec — we ship fabric swatches worldwide.