I had several questions about the belt material, and its the most important piece to the VDG next to the sphere.
What you need is 18 oz. Vinyl Coated Polyester
A very tough mesh fabric that is coated with vinyl making it waterproof with a high resistance to dirt, mildew, oil, salt, chemicals and UV. Outstanding strength. Made of top quality materials, will not tear, stretch, crack, rot or mildew. May be sewn or glued with HH-66 vinyl cement.Were you can get it!!!
They have a 42 oz. version but I have not tried it.
I got mine in white, almost all the black materials I tested didn't do so well.