Polyester and other synthetics shed microplastics when washed, so we recommend a washing bag to protect all fabrics and garments from being torn or stretched out in the washing machine. It will also limit microfibre leakage in the washing process, which means preventing microplastics from entering into rivers and oceans.
Did you know that cotton clothes actually can be washed, dried and heated several times without any notable marks? But instead of bleaching it, you can easily use lemon juice for stains and vinegar for bad smell. This both benefits your clothes and the environment.