This is a simple add on that makes backpacking/hiking easier. You can add it to any pack and it fits most hydration tubings. Just clip your hose exactly where you want it. Great when the pack is on the ground as well.
Seriously, $6-8 dollars for this tiny piece of plastic & metal? Sighs, but it does work. I tried using name tag holders, but they're not long enough to fit the tubing, so I sucked it up and bought this clip. But platypus, give us a break, this could not have cost more than 10cents to manufacture.