Which fabric to use for making an anode bag?

I have made a setup for electroplating copper. The electrolyte is acidic copper sulphate solution. The issue is that my copper electrode is leaving black particles in the solution. I found online that people place the copper electrodes in "Anode Bags" when they are plating. The bag keeps the particles inside while letting the Copper ions flow through. The problem is that I can not find an anode bag where I live so I am going to make my own. My question is that which fabric should I use? Is a normal piece of cloth going to be good for me or I will need some special fabric?


