I've been using that device for years to give me backup carrying capacity, especially on my small EDC back pack. I had a shoe repair shop sew two small Fastex lash patches to the bottom of my Tom Binh Synapse daypack. As needed, I can fit to those patches a nylon belt pouch, ~9" x 6" x 2", that BQ used to sell. The pouch rides in the pack, filled with sundries. This arrangement can give me about an extra 100+ cu. in. of storage. Enough, for example, to fill & carry my plastic water bags, if I have to walk home. The patches also have other cargo carry options.