NIce pack, but not that comfortable.
I tried this pack out on a recent 8 mile hike, and though I like the function, the fit needs some work. Rather than the pack resting on your hips (as it should), the base of the back support presses hard into the top of your backside. Though I got used to it after hiking for two hours, it was quite uncomfortable, especially at the start. Plus, I imagine repeated days like this would cause more serious issues (bruising, aching, etc). Had they only designed this better, I could love this pack.