How to Wash and Care for Activewear So It Lasts
Activewear fabric is built to stretch and recover. But wash it like regular cotton, and that engineering wears out fast.
The fix is mostly about what to avoid.
Wash cold, with similar colours
Hot water speeds up the breakdown of elastane's fibres. That's the main reason leggings and sports bras lose their snap-back and start to sag.
Cold water slows that down a lot.
Similar colours matter more for synthetics than cotton. Nylon and polyester pick up dye transfer more easily.
Skip the fabric softener
Fabric softener coats fibres in a thin waxy layer. Exactly what a moisture-wicking fabric doesn't need.
Over time, that coating builds up. Moisture-wicking drops. The fabric feels less breathable, less stretchy.
It's a cotton habit that works against synthetic activewear.
Air dry instead of tumble dry
Heat is the fastest way to damage elastane's recovery. One high-heat cycle can do more harm than a dozen cold washes.
Air drying takes longer. But it's the difference between years of shape and one season.
If time matters, use low heat. Skip high heat entirely above roughly 10% elastane or spandex.
Store folded, not hung
Hanging leggings or sports bras by a waistband or strap pulls tension in one direction. Exactly where the elastic should stretch evenly.
Over weeks, that stretches the waistband out for good.
Folding avoids it entirely. No extra time needed.
Swimwear needs an extra step
Chlorine and salt water are harder on elastane than sweat.
Rinse swimwear in cold fresh water right after wearing it. Even a quick rinse works, before it dries with chlorine or salt still inside.
Then follow the same routine: cold wash, no softener, air dry.
In short
- Cold water, similar colours.
- No fabric softener.
- Air dry, or low heat at most.
- Fold, don't hang.
- Rinse swimwear right after wear.
Five habits. The difference between activewear that lasts years and activewear that needs replacing after one season.
For the science behind it, read our fabric guide, or start from the full activewear guide.