What material can I make a shield out of?

I need to make a shield to keep clay scraps from flying all over the place when I am trimming pots on the potter’s wheel.
It should be water resistant,flexible and simple to take on and off.I’d like to attach it to the front where the scraps would be headed.(the side opposite the brand name)
I am not sure how I will do that.
I initially thought velcro but that will eventually get clogged with clay so I’ll probably clamp it.
What I do know is that I am tired of the huge mess it creates.
Any ideas would be appreciated.