Can get 2 for less than the price of 1 camelback... works well... took it out with me for a day outside, and the water inside the pack stayed well insulated and didn't get hot. Takes a little work to get the water to come out, but works easier if you take the pack off and use it like a siphon.
Used this hiking, running, and cycling and it works as expected. Does not dig into shoulders and the weight is distributed nicely. The loops to hold the hose are a little difficult to work on the run so I'm knocking 1 star off for that.
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