Great flexible pack
I've used this pack several times now and love it. Key features for me:1) Pivoting hip belt. Unlike most packs where the hip belt is locked in an upsidedown T shape, this one allows for mobility. I carried this pack with about 40lbs (including pack weight) on a 4-day hike that included a fair amount of scrambling, including a long 5.2 climb. The additional flexibility allowed by the pivoting hip belt was a life saver.2) Sticky material at the based of the pack. All previous packs I've owned caused my shirts to ride up over time such that I need to pull the shirt down every 15 mins or so to avoid having the pack on bare skin. The material at the base of this pack prevents that. Small detail, big comfort.3) Fully adjustable. There are so many different ways to load and secure this pack. This is very handy when you need it as a day pack in the middle of a long trip to investigate an offshoot to your main trail.4) Hip belt is thick and is molded into a curve. I've had issues in the past with packs being a little more flimsy at the hip belt, meaning that to get the load balanced on my hips correctly, I had to cinch the belt up SO tight that it was tough to breathe.
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