The foam I used is high compressed white foam that I used to cut R/C glider wings out of.If I had my choice I would have made it out of Epp foam you could run that kind of foam over with my car and you still would have a battle field.I would just slide your Battle field under the bed not worry about it.Or find a Plastic supply company and purchase some Coroplast 1/4" thick and make your self a box you can ussaly get a sheet for about $14.00 try Regal plastics they might have a warehouse in your area.The river I airbrushed on the color is metalic blue poly carbonate paint for R/C bodies.My thought was it would melt a little in to the foam and make a riverbed.But it did not because the other coats of paint formed a protective shell
