Anyone have a source for these?

I’m looking for a couple of flat pouches that are all breathable mesh and around 8″ square with maybe a clip at one end. They’re for holding a pack towel and wash cloth which will be wet, so the mesh is so they’ll dry.

I’m about to buy a couple from that-store-named-after-a-river-in-south-america, but they’re mesh on only one side. Thought I should see what someone here might know about first.