I've heard that when washing non-cotton materials (e.g. outdoor, sports and functional clothing, fiber furs), a significant amount of plastic is washed into the wastewater with every wash cycle. This ends up in the sea.

An Einstein television program showed how a family washes these materials with a polyester wash bag. The fine plastic fibers from the laundry remain in the bag and can be removed by hand after the wash cycle. These are then disposed of in the waste and do not end up in the oceans. Up to 40% of the microplastics in the world's oceans are said to come from washing. We are all involved in this.

Hence my question:
Is it possible to buy wash bags or wash sacks in Migros which catches this microplastic when washing?

If so, does anyone have experience of this and can they give any tips?

If not, this would be an important suggestion to include this in the range (keyword GENERATION M).