Micro Plastic Wash Bag The Guppyfriend Washing Bag is the first scientifically approved solution to prevent microfibers from entering into rivers and oceans. It results in fewer fiber losses and thus helps your garments last longer. Those microfibers that break during washing are captured inside the bag. INFORMATION material: polyamid 6.6 untreated size M: 50 x 74 cm / 19,7”x 29,1”