When a pair of leggings goes baggy at the knee or a tee loses its shape, it is tempting to blame the fabric. Sometimes that is fair. More often, the damage happens at home, in the laundry. These are the five habits we see most.
The five mistakes
1. Tumble drying on heat
This is the big one. Elastane, the fiber that gives stretch fabrics their stretch, breaks down with heat. Every hot cycle takes a little of the recovery away, until the waistband no longer snaps back and the knees stay baggy.
Hang training clothes to dry. Thin synthetics like AirKnit dry in a few hours. CoreFlex dries overnight. If you must use the dryer, use the lowest heat setting and take things out while they are still slightly damp.
2. Using fabric softener
Softener works by coating fibers with a thin waxy layer. On cotton towels that feels nice. On technical fabrics, it blocks the gaps that let sweat move through and air in, which means slower drying and odor that does not wash out. Skip it entirely for training clothes.
3. Leaving damp clothes in a bag
A sweaty tee sealed in a gym bag for a day is where most lasting odor starts. Take clothes out as soon as you get home. If you cannot wash them straight away, hang them up to dry first, then wash.
4. Washing hot to get things clean
Hot water feels like it should clean better. For synthetics, it mostly shortens the life of the elastane and can set odor rather than remove it. Cold water and a good liquid detergent do the job. For stubborn odor, a 30 minute cold soak with a cup of white vinegar before the wash works better than heat.
5. Washing with towels and denim
Heavy, rough fabrics rub against lighter ones in the drum. That friction is what causes pilling on leggings and fuzzing on tees. Wash training clothes together, inside out, and keep towels, jeans and anything with velcro in a separate load.
The short version
- Wash cold, inside out.
- No softener.
- Hang to dry.
- Do not leave anything damp in a bag.
- Keep rough fabrics in a separate load.
None of this takes extra time. It just means the tee you bought in spring still fits the same way in the fall. Notes for each fabric are in our care guide.