Cotton vs Polyester Shirts: Which Is Better for Custom Printing?

Short answer: for most custom printed tees, cotton is the better pick. It feels better for everyday wear, it is the easiest fabric to screen print, and it is the only one that takes discharge ink. Polyester wins when the shirt has to handle sweat, sun and hard work: it wicks, dries fast, holds its shape and barely shrinks. It just needs the right ink, usually a low-cure ink with a bleed blocker or a DTF transfer.

We print both every week. Here is how they compare side by side, and how to pick the right one for your job.

The Core Difference

Cotton is a natural plant fiber. Polyester is a synthetic, a plastic fiber made from petroleum. Most of what separates them comes down to water. Textile references put the standard moisture regain of cotton at about 8.5% and polyester at about 0.4% (source: NPTEL, Moisture in Textiles). In plain terms, cotton soaks up sweat and holds it. Polyester does not absorb much, so moisture moves across the fabric and dries off fast. That is the whole idea behind performance and "dri-fit" style shirts.

Polyester is also thermoplastic: it softens with heat. That is why it holds its size in the wash, and also why it can scorch, shine or bleed dye under a heat press or curing dryer. Our guide to does polyester shrink covers that in detail.

Cotton vs Polyester Side by Side

Water-based and discharge ratings match our water-based and discharge printing page. For sublimation vs DTF, see DTF vs sublimation.

How Cotton Prints

Cotton is the friendliest fabric in the shop. Plastisol cures at normal temperatures without worrying about dye bleeding into the ink. Water-based ink soaks into the fibers for a soft print. Discharge pulls the dye out of reactive-dyed cotton for bright, soft prints on dark shirts. That only works on high-cotton fabric.

Cotton quality varies a lot. A combed ring-spun tee gives a smoother surface and sharper detail than a basic open-end tee. See what is ring-spun cotton, and plan for shrink with does cotton shrink.

How Polyester Prints

Polyester takes more care, but it prints great when it is set up right. The big issue is dye migration: the dyes in polyester can turn to gas under heat and bleed into the ink, so a white logo on a red shirt turns pink. SanMar's dye migration white paper says low-cure inks for polyester generally cure around 290 to 320°F, some as low as 250°F, and recommends a bleed-blocking base on polyester, blends and tri-blends (source: SanMar, Screen Printing Dye Migration).

• Screen printing: low-cure plastisol with a bleed blocker. Good for team numbers, big runs and bold logos.
• DTF: a strong choice for full-color logos and small runs. Watch heat and time so the fabric does not shine. See custom DTF transfers.
• Embroidery: works well on polos and jackets. Slick, stretchy performance knits need the right backing to avoid puckering. Polyester thread is a natural match; see embroidery thread types.

Shopping performance tees for a team or crew? See custom Dri-Fit shirts. For example, SanMar lists the Sport-Tek ST350 as a 3.8 oz, 100% polyester tee (source: SanMar Tee Navigator).

Blends: The Middle Ground

You do not have to pick one side. Blends mix the two:

• CVC (cotton-rich). Mostly cotton with polyester for shape and less shrink. The Next Level 6210 is 60/40 combed ring-spun cotton/polyester. Read our take on the Next Level 6210 CVC. Port & Company's PC340 is another 60/40 CVC.
• 50/50. Half and half. The Port & Company PC55 is 50/50 cotton/poly. Durable and affordable, but discharge is not recommended.
• Tri-blend. Polyester, cotton and rayon for a soft, drapey, vintage feel. See what is a tri-blend shirt.

The more polyester in the blend, the more you need to think about dye migration and low-cure inks. The more cotton, the more it behaves like a cotton tee.

Which Should You Pick?

• Everyday tees, retail, events, merch: cotton or a cotton-rich CVC.
• Softest print on dark shirts: 100% cotton with discharge or water-based.
• Sports teams, runs, summer outdoor work: 100% polyester performance.
• Work crews that want less shrink: a 50/50 or CVC blend.
• Full-color logo, small run, any fabric: DTF.

Weight matters as much as fiber. A 3.8 oz performance tee and a 6.1 oz heavyweight cotton tee feel nothing alike. See t-shirt fabric weight and GSM, and start with choosing the best t-shirt material for your design for the big picture.

Frequently Asked Questions

Is cotton or polyester better for screen printing?
Cotton is easier. It cures at normal temperatures and takes water-based and discharge inks. Polyester prints well too, but it needs low-cure ink and often a bleed blocker to stop dye migration.

Is polyester or cotton better in hot weather?
For sweaty work or sports, polyester, because it wicks and dries fast. For casual wear, many people find cotton more comfortable and breathable.

Can you do discharge printing on polyester?
No. Discharge only works on reactive-dyed fibers like cotton. On blends you get a faded vintage look, and 100% polyester will not discharge.

Does polyester shrink like cotton?
No. Polyester is heat-set at the mill and barely shrinks in normal washing. Cotton shrinks the most in a hot dryer.

What is a CVC shirt?
CVC means chief value cotton: a blend where cotton is the main fiber, like the Next Level 6210 at 60/40 cotton/polyester.

Which is better for embroidery?
Both work. Cotton is easier to stitch. Polyester performance fabric needs the right backing to avoid puckering, and polyester thread holds up well on it.

More Blank Fabric Guides

• Does cotton shrink?
• What is ring-spun cotton?
• What is a tri-blend shirt?
• T-shirt fabric weight and GSM
• Choosing the best t-shirt material (start here)
• Does polyester shrink?

Ready to print? Tell us what the shirts are for and we will recommend the fabric and the ink. Send us the garment, colors and quantity on our request a quote page, or see pricing for custom screen printed t-shirts in bulk. For performance tees, see custom Dri-Fit shirts.