Merino Short - 5"
Designed for everyday movement in merino.
Shop nowDo Workout Clothes Shed Microplastics?
Microplastics are tiny plastic particles. One common source is synthetic textiles (like polyester and nylon), which can release plastic fibres during wearing and washing.
The short answer
Yes — synthetic workout clothes can shed microplastic fibres, especially during washing. The wearing and washing of textiles made from synthetic (plastic) fibres is recognised as a source of microplastics in the environment.
Why activewear is part of the conversation
Most modern activewear is made from synthetic fibres (polyester, nylon, elastane blends). These materials are plastics. As they’re worn and washed, they can release tiny fibres (often called microfibres), which are a form of microplastics.
Is this only a washing-machine issue?
Washing is one of the main pathways discussed because it can dislodge fibres and send them into wastewater systems. But wear and abrasion can also contribute to fibre loss over time.
What this means if you want “plastic-free” activewear
If your goal is reducing plastic fibre shedding, the two highest-leverage moves are:
- Choose natural-fibre activewear where possible (e.g., merino wool, cotton, linen/hemp for casual movement)
- Wash less / wash smarter to reduce fibre release and extend garment life
For the broader “plastic-free activewear” explanation, start here: Plastic-Free Activewear: natural fibre activewear for everyday movement .
Related guides
- Workout clothes without microplastics (buying guide)
- How to reduce microplastics from laundry (checklist)
- Low-tox activewear: why what you sweat in matters
- Why label food ingredients — but not what we wear?
