When clothes are washed they shed microfibers. Clothing made from synthetic materials, like polyester and nylon, is particularly susceptible. These fine yarns are less than 5 micrometers and break off clothing from friction and turbulence during the wash cycle.

Meet the Guppyfriend Washing Bag. It’s a master microfiber catcher and one solution to preventing microplastic pollution when washing clothes. The bag is made from a tough, monofilament material that captures any microfibers shed while washing. Simply fill the bag 2/3 full of clothes, close the top, and wash on cold. When you remove your clothes, you'll also want to throw away the microfibers that you've collected with the bag (make sure not to rinse the bag out, as that would defeat the purpose).