Is there any particular reason for the rubber to be on the inside or out? You want moisture, but not too much moisture so I would think rubber side out would be better. I have an old gum blanket that my dog got hold of so I was thinking of cutting the remnants into pouches or poke sacks.
Pvt., 49th Indiana
"You say that it is your custom to burn widows. Very well. We also have a custom: when men burn a woman alive, we tie a rope around their necks and we hang them. Build your funeral pyre; [then] beside it, my carpenters will build a gallows. You may follow your custom. And then we will follow ours." - General Sir James Napier