James, can you tell. The natural rubber granules is this real rubber?
If so," this is not a joke" The people who are alergish for latex have to be carefull if thay work with it a lot. This is an underestimated problem were you can come in coma from. (I know I have been nearly there.) So wear vinyl gloves if you want to work with it. Do not get dust or so into your mouth or little wounds.