Paper travel soup? What is that? Did you hear about such soap before? I also found about it only recently. Soap and paper? Hmm…I hadn’t used it yet myself, but it works by reviews I read. It should be fantastic item in the backpack. It is light to carry, there are no issue to bring it through security at airports, because it is just paper. It is very simple to use, as you just simply add water and you have a soap.