I used regular screen door/window mesh. You can buy it at Home Depot. I hot glued a rectanglular piece inside the bucket large enough to cover all the keyholes and then I cut another rectangular piece the same size only this time with the mesh going in a diagnoal pattern to "cross" the first piece and minimize the view into the helmet of the back of my head with the bucket on. I glued that one on top and presto. Hope this makes sense. I can take a close up picture if you need me to.