Sounds and looks like Tent Floor Foam is ethyl vinyl acetate (EVA), like what GG, Speer and OWF sell, in different weights. It has a surface that makes you think it is plastic coated, but it is not.

EVA is one of the oldest, toughtest foams made. I've got it in 1/8", 1/4" and 3/16". Only the 1/8" product is slightly fragile, but it is very lightweight.

- MacEntyre