I use galvanised mesh, un-coated. I don't share the belief that feeders scare fish. Certainly not on the rivers I used to fish back home and out here in France. The other day, due to restrictions caused by trees, brambles, etc I had to use a short hook link, no more than 12" and the angle of reel line would have been greater than 45 degrees because of the depth of water and high bank, yet I still got the bites.
In one swim on the Vienne that is an absolute snag pit I made some feeders out of the brown plastic mesh that you use for baking and found in the pound shops. They were designed to be disposable feeders, but they lasted longer than I expected.