When we first heard about the Scrubba, we were a bit surprised by the simple genius of it. At its essence, the Scrubba is a portable washboard. A small and lightweight bag, it easily compresses to fit into the tiniest of nooks in your backpack. Once opened, the Scrubba bag is large enough for a couple of shirts and shorts, or one to two pairs of jeans. On the inside of the bag are washing nodules (the washboard) that do all the scrubbing for you.