I just use the generic ebay versions, no mesh, but with clear plastic windows. I modify it by using wide masking or painters tape over each pocket. They also have one edge taped onto itself to act as a pull tab. Its great and you dont have to worry about your filters all slipping out. when the edges are taped shut. On these pieces of tape, I indicate the type/color of filter, and filter factor. I also like to throw on a few wide strips of gaffers tape onto the back of the filter pouches, so I dont have to carry a roll around. Also the pouches I use, I tend to fold in half, stick in a cable release in the middle, and using a medium rubber band to hold it all together.