I purchased the tube to use with my Rope Drop bag. It was a pain to use. Since you have to take your pack on and off per ride requirements, each time, because the tube was so long that it would make stowing my bag difficult. Then, when I would put my pack back on and the tube would twist and keep wrapping around my arm and falling off the magnet clip. I would walk, and the mouthpiece would come off the magnet clip. I got so frustrated that I removed the tube and put it in a baggie in my backpack. I haven't used it since.
