Keeping my playmats in individual tubes on a shelf was getting quite unruly for my multiple playmats because they couldn’t stack, would slide around, would fall easily off the shelf if I attempted to stack, and would take up too much room if left sitting next to each other. This dual tube solves that problem! I can store all my mats compactly and stack the dual tubes. I kept one single tube for travel but now my playmats are all neatly stored in the dual tubes.