What kind of foan/rubber was used on the FJ helmets? I know is some kind of rubber but is textured in the outside, this texture was a layer of fabric? I know that rubber is very fragile to the heat and wet. I ve heard that was some kind of neoprene too. Was this material used on other artifacts? I suposse is no longer fabricated.
Thanks in advance!
poli
Thanks in advance!
poli