SO7mm
Well-known member
Another vote for Kifaru Duplex frame. I have degenerative disks in my lower back and I do just fine with that frame.
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Forgot to post an update. So I went to my chiro/therapist. He said he was not as worried about the pack having any sort of frame as he was the waist belt. He wanted one to help me to help activate my core and transfer weight to my hips. By activate he essentially means have something to push out against when you tighten your core muscles.