Apart from the zipper the bag is entirely made of Polyamide 6.6. The material is untreated, undyed, and does not contain any additives. It’s pure and can even be used in a medical context.
Recycled material doesn’t work (yet) for this kind of high-tech mesh. But the washing bag is designed so it can easily be recycled with identical materials at the end of its lifecycle: The whole bag – except the zipper – is made of a single material. Please send your Guppyfriend back at the end of its lifecycle. We’ll reuse and eventually recycle them into new Guppyfriend Washing Bags.