Since I can't quilt with this, I'm posting here

I'm looking for a source for very fine mesh. It's woven, but it doesn't ravel easily so I'm guessing it's been heated to set the weave. It doesn't stretch at all, but does have some give along the bias. I've seen it used for cosmetic bags etc. I'm guessing it's nylon? It is stiff. I'm not looking for tulle or door screening. If anyone knows what I'm talking about and has the "Official Name" for this stuff so I can do a google search or anyone know a source, I would really appreciate it! Thanks, Nancy