Does Polyester Shrink? How to Prevent Shrinkage in Custom Apparel

Does Polyester Shrink? The Short Answer

Polyester is highly resistant to shrinkage under normal conditions. Unlike cotton, its synthetic fibers hold their shape through most wash and dry cycles — but it can shrink when exposed to high heat, especially above 130°F (54°C). As long as you wash in cold or warm water and avoid a hot dryer, polyester blanks and custom-decorated garments will maintain their original dimensions wash after wash.

When Polyester Does Shrink

Polyester is thermoplastic — its fibers are heat-sensitive by nature. Under normal laundry conditions that’s a non-issue, but a few situations can cause measurable shrinkage:

High-Heat Dryers

The most common culprit. A residential dryer on a high-heat setting can reach 135°F or more, which is enough to relax and contract polyester fibers. Even a single high-heat cycle can shrink a performance tee by 3–5%. Always use low or no-heat settings.

Hot-Water Washing

Hot water (above 110°F) softens polyester fibers enough that agitation can cause permanent distortion. Stick to cold or cool water — it cleans just as effectively and poses zero shrinkage risk.

Poly-Cotton Blends

Blended fabrics behave differently than 100% polyester. A 50/50 poly-cotton blend will shrink more than a 100% polyester shirt because the cotton component contracts with heat and moisture. The higher the cotton percentage, the more aggressive the shrinkage. A 60/40 poly-cotton can shrink 4–8% in a hot dryer.

Prolonged Heat Exposure

Leaving polyester garments in a hot car, near a radiator, or in direct high-heat sunlight for extended periods can gradually distort fibers. This is less common in everyday use but worth knowing for storage.

Polyester vs. Cotton vs. Blends: Shrinkage at a Glance

For most branded apparel programs and uniforms, 100% polyester or a high-poly blend is the smart call when dimensional stability over dozens of washes matters.

How Custom Printing Affects Polyester Fabric

This is where it gets nuanced — and where choosing the right decorator matters.

Screen Printing Cure Temperatures

Plastisol inks — the industry standard for screen printing — cure at 320°F (160°C). That temperature is applied to the ink layer via a conveyor dryer, not the fabric substrate directly, but the garment does pass through heat. On 100% polyester, this can cause dye migration: the sublimation dyes in the fabric bleed upward into the ink, shifting colors (especially whites and light colors over dark polyester). It does not typically cause shrinkage if the garment is tensioned correctly on the belt. Water-based and discharge inks cure at lower temperatures and reduce dye migration risk on poly blends.

DTG Printing on Polyester

Direct-to-garment printing uses water-based inks that require a similar cure temperature to plastisol — typically 320°F applied briefly via a heat press. The risk of shrinkage is minimal on pre-shrunk blanks, but DTG works best on 100% cotton or high-cotton blends. On performance polyester, DTG ink adhesion and wash fastness can be inconsistent without specialty pretreatment.

Heat Press and Transfers

Heat-applied transfers — including water-based transfers — use a press set between 300–375°F for 10–15 seconds. Again, properly pre-shrunk polyester handles this without issue. The short dwell time limits heat penetration into the fiber. DTLA Print uses water-based transfers as an alternative decoration method with a 10–14 business day turnaround, making them a flexible option for small runs on poly-blend garments.

Bottom line: a skilled decorator who sets proper temperatures, tensions, and dwell times will not cause shrinkage during the printing process. What happens post-purchase in the laundry is up to the end user — which is why care instructions matter.

How to Care for Screen-Printed Polyester

Proper care extends the life of both the garment and the decoration. Follow these steps and your custom t-shirts will look sharp for years:

• Wash cold. Use cold water (below 80°F) on a gentle or normal cycle. Cold water cleans effectively and eliminates shrinkage and dye-migration risk.
• Turn inside out. Flipping the garment inside out protects the printed surface from abrasion against other clothing and the drum.
• Skip the hot dryer. Use low heat or — ideally — hang dry. Air drying is the single biggest factor in preserving both the garment shape and ink vibrancy.
• Low heat if you must machine dry. If hang drying isn’t an option, use the permanent-press or low-heat setting and remove promptly to prevent heat from building up.
• No ironing directly on the print. If the garment needs ironing, turn it inside out and use a low setting. Never iron directly over screen-printed or heat-pressed areas.
• Avoid bleach and fabric softeners. Both degrade polyester fibers and attack ink layers over time.

If you’re ordering decorated apparel for a team, event, or uniform program, including a printed care label or a QR code to a care-instruction page is an easy way to extend the life of your investment.

Best Polyester and Poly-Blend Blanks to Order at DTLA Print

Choosing the right blank is half the battle. Here are the polyester and poly-blend options we stock and decorate in-house in downtown Los Angeles:

Champion Performance Blanks

Champion’s moisture-wicking performance apparel combines athletic comfort with the brand’s trusted reputation. Featuring lightweight 100% polyester tees, polos, and training apparel designed to help keep wearers cool and dry, these styles are ideal for team uniforms, school athletics, fitness brands, corporate events, and promotional apparel. Champion performance blanks are decoration-ready for screen printing, embroidery, and heat transfers.

Gildan Blanks

Gildan’s 50/50 poly-cotton blends — including the popular 8000 and 5000-series — hit the sweet spot for everyday branded tees where price matters. The cotton component gives a familiar soft hand; the polyester content adds durability and reduces shrinkage vs. 100% cotton. Great for large promotional runs. Screen printing from 12 pieces; custom t-shirts available across the full Gildan range.

Nike, Adidas, and Under Armour Performance Styles

For premium corporate gifting, retail-quality merch, or brand ambassador programs, we carry decorated styles from Nike, Adidas, and Under Armour. These performance polyester and poly-blend garments carry built-in brand equity and are pre-treated to handle decoration without dye migration issues. Minimums and methods vary by style — contact us for availability.

AS Colour Technical Fleece and Tees

AS Colour’s poly-blend performance and lifestyle styles have become a staple for brands that want a premium look without the Nike price point. The fabric quality is consistent lot to lot, and they’re well-suited for both DTG and screen printing.

All blanks DTLA Print carries are pre-shrunk at the mill before we decorate them. We also offer free mockups and proofs before any order goes to press — so you see exactly how your art will look on the chosen blank before we print a single piece.

Get a Quote for Your Custom Polyester Apparel

Whether you need 12 performance tees for a weekend 5K or 500 poly-blend hoodies for a brand launch, DTLA Print handles decoration in-house with screen printing, DTG, embroidery, and water-based transfers. Standard turnaround is 10–14 business days for screen print and embroidery; rush orders are available from 3–5 business days. We use Pantone-matched inks, offer soft-hand and baby-safe ink options, and provide free artwork touch-ups and proofs on every order.

Request a quote and our team will recommend the right blank, decoration method, and ink type for your project — no guesswork, no surprises.