Geigerrig 700M Hydration Ready Backpack

Got this to use for a Spartan Super i ran yesterday and did not work out as well as I'd of hoped so I am returning, but figured I'd take time to give review so others would have something to base decision's on. Pro's - Very well built structurally and the pack is very sturdy & has lots of room. I can see this being a very good long hike or even biking pack but not for obstacle course's with lots of (or potential for) mud with no way to clean off during race. Con's - A bit heavy when filled (however pack is actually a bit heavy when empty due to the way its built). Bladder inflation bulb kept coming loose from inflation tube during race. Also when bladder was inflated the water would bounce around inside so would have to deflate after each use to keep from feeling like something was beating me to death (other then the obstacles). I gave this 3-stars because i was impressed with the design and overall structural soundness, however did not meet the specifics for what I would be using it for, especially at this price point.