In reply to hovhtm:
I think the "hip belt" on that pack is intended to increase the stability of the load, not to bear weight. The pack doesn't have a frame, just a foam stiffener on the back panel, so the ability to transfer any load to a waist strap is limited. You can cinch up the waist strap and get at least some load-bearing effect, but I don't think that's really the purpose, and, given that the strap is unpadded webbing, is likely to be uncomfortable.