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.
We bought these to take hiking last summer. Before we had borrowed our son's more expensive hydration packs, but I wanted to get our own. These packs not only look like the more expensive brand, but they worked the same. The mouth piece was durable and when I wanted water, it was there.
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