Screen printing on performance activewear: fabrics and ink choices
Performance activewear is common in Australian gyms, outdoor clubs and workplace fitness programs. From moisture-wicking tees in Brisbane to running layers used in Melbourne and Sydney, garments must handle sweat, washing and movement without letting graphics crack, peel or blur.
Wicking describes the fabric’s ability to move perspiration across its surface. It does not mean the garment stays dry, and it does not make every ink safe. Fibre content, surface treatment, stretch and curing conditions all influence the finished print.
Screen printing suits logos, numbers and high-volume runs because each colour can be applied with controlled opacity. Match ink chemistry to the substrate rather than treating polyester, nylon and cotton blends as one material.
For distributors and brands, strong results come from testing the exact garment, controlling the cure and planning artwork around breathability. LOCK Promo’s in-house screen printing, heat transfer and embroidery services provide several routes through that process.
Match the ink to the fabric
No single ink performs across every performance textile. A 100% polyester shirt behaves differently from cotton, and adding elastane changes flexibility again. Fibre, colour, finish and intended wash frequency should be confirmed before artwork approval.
The main substrate choices compare as follows:
| Substrate | Preferred screen-printing route | Main caution |
|---|---|---|
| 100% polyester | Polyester ink with a white underbase where needed | Heat may cause dye migration; heavy builds feel stiff |
| Polyamide or nylon | Supplier-approved poly or special-effect ink | Test opacity, stretch and colour fastness |
| Cotton-rich | Water-based or discharge ink | Any polyester content may require another route |
| Polyester-elastane | Flexible ink with controlled curing | Rigid builds can crack; hand feel can change |
| Polypropylene | Low-temperature or specialist ink | High heat and conventional plastisol may damage fibres |
Polyester is common in activewear, but finish matters as much as fibre. Moisture-wicking treatments, brushed backs and high elastane content can change adhesion and drape, so a production sample remains essential.
For trade-show teams using cotton polos rather than technical activewear, the same preparation discipline appears in this custom polo guide.
Understand how wicking fabric behaves
A wicking knit often combines a smooth synthetic surface with a loose or brushed inner face. Moisture moves along the fibres and across the exterior, where evaporation can occur. The print must not seal the surface or create a stiff patch that traps perspiration.
Polyester is widely used because it is lightweight, durable and quick-drying. Polyamide handles moisture well too, while polypropylene floats moisture away from the skin. Elastane adds recovery and comfort, but stretch places greater stress on the ink film at seams, sleeves and hems.
Fabric weight and a “wicking” description are not enough to predict printability. Colour, coating, knit structure and stretch all matter, especially on recycled polyester. Test an actual garment rather than relying on a generic swatch, and record the fabric code so repeat orders use the same tested combination.
Select ink for performance requirements
Water-based ink is usually the first consideration for cotton-rich garments because it penetrates the fibre and leaves a soft hand. It can also suit some treated synthetics when the ink supplier approves the combination. Discharge ink removes the underlying cotton dye before laying down a pale colour, but it cannot discharge polyester.
Polyester ink is designed for synthetic fibres and gives strong opacity and colour retention on sports shirts. Coloured areas on dark fabric may need a white underbase. Plastisol offers broad colour choices, although a thick film can impede comfort and flex. Silicone-based ink provides exceptional stretch and a soft feel.
The right choice follows the use rather than the trend. Race singlets, training tees and corporate activewear can demand different combinations of opacity, breathability and hand feel. A community campaign also benefits from a clear organisational story; background from Mama Mayan can inform the wider brief while technical decisions remain test-led.
Control colour, stretch and placement
Ink colour must match the garment and survive the cure without tinting the surrounding fibres. On dark polyester, an underbase creates a controlled foundation, but excessive layers can make a print rigid. Excessive heat is not a substitute for good preparation; it can cause dye migration, scorch marks or a halo around artwork.
Designers should mark stretch zones, avoid unnecessary heavy black areas and keep large prints away from high-sweat seams where possible. Small logos can use a lighter build than oversized numbers. The result should feel like part of the garment rather than a sheet sitting on top.
Build a reliable production process
Good screen printing on performance activewear depends on ink chemistry, fabric compatibility and careful curing. Ink suited to wicking fabrics helps prevent cracking, peeling and dye migration while preserving breathability and colour fastness. Tested ink-substrate pairings suit team uniforms, fitness apparel and branded activewear.
Before production, artwork should be separated by ink colour and prepared as clean vectors. Fine details may need a finer mesh, while opaque lettering usually benefits from a heavier build. Confirm screens, emulsion and flash temperatures with the chosen ink rather than copying settings from a different substrate.
Heat transfer suits names and small marks; embroidery suits premium stitched logos; dye sublimation is strong for all-over polyester graphics. Each method has its own substrate restrictions and should be chosen for the design, not as an automatic substitute for screen printing.
Account for washing, sunlight and local rules
A realistic wear test should include washing, drying, rubbing and stretching. Australian conditions add UV, sweat, sunscreen residue and frequent laundering, so an attractive print may need adjustment after several cycles. Use the detergent and wash temperature likely to appear on the care label.
A garment sample should also be checked for colour migration, edge lifting and skin comfort. For apparel sold in Australia, fibre-content and country-of-origin disclosures must follow applicable Australian consumer and textile-labelling rules. Care information should explain suitable washing and ironing, and promotional graphics should never obscure a required label.
If activewear is supplied as personal protective equipment, Australian work health and safety laws, Safe Work Australia guidance and relevant AS/NZS standards apply. Decoration must not compromise visibility, flame resistance or other performance. Clubs, gyms and employers should check those claims before using a decorative garment as protective workwear.
Turn the specification into merchandise
LOCK Promo, based in Mukilteo, Washington, is a promotional products distributor and division of family-operated Locknane, Inc. Its catalogue spans apparel, drinkware, bags, office accessories, technology items and awards. Its Mukilteo operation provides screen printing, heat transfer and embroidery in-house.
The right production method depends on the brief. Review LOCK Promo’s decorating technology to compare approaches for polyester, cotton and blended garments, then send the fabric details, artwork, colours, quantities and delivery window for a practical recommendation.
A strong brief identifies the base garment, ink-substrate pairing, cure plan, wash expectations and placement. Send that specification to LOCK Promo and request a sample before the production run, giving teams across Sydney, Melbourne, Brisbane and other Australian markets activewear that looks sharp and performs as planned.