It's a nylon (polyamide) mesh. It's not going to spew microfibers in the same way that a polyester fleece would. For reference, I found you some micrographs of

It's a nylon (polyamide) mesh. It's not going to spew microfibers in the same way that a polyester fleece would. For reference, I found you some micrographs of the materials we're talking about: poly fleece: https://www-tc.pbs.org/wgbh/nova/next/wp-content/uploads/2017/05/microfiber-closeup-1400x788.jpg https://www-tc.pbs.org/wgbh/nova/next/wp-content/uploads/201... nylon mesh: https://assets.fishersci.com/TFS-Assets/CCG/product-images/F587090~p.eps-650.jpg https://assets.fishersci.com/TFS-Assets/CCG/product-images/F...