I forget what it's called but it is 1/8 thick hardboard panel that comes in 4' X 8' sheets. I bought it at Home Depot, I'm sure other building supplies carries it.
The foam is 1/8" thick closed cell foam variety that I bought online but can't remember where as I did the panels 2 years ago.
The black vinyl is black stretchable type that they sell at poker table supply places also online.