Leaked on day one
I got this, packed my pack with it the night before, and when I woke up this morning it had leaked several ounces of water into the bottom of my pack. There was no pressure on it, the cap was on tight, and the hose was fully attached. It is now on its way back to backcountry. Maybe I just got a bad one, but it definitely did not live up to the good things I've heard about this bag.