I just got the pack about a month ago. Used it exclusively for rock climbing but am looking forward to using it on ice. The pack easily holds a rack and climbing gear, partner can carry the rope. I have fit the entire rack, harness, shoes, chalk bag, rope, water, and helmet in there though. First thing I did with the pack was take out the frame, I think the pack works better without it, just my opinion. It wasnt set properly when I got it but, it can be easily bent. It is clear that Patagonia had their athletes help with the construction of this pack. My favorite feature is the closure system. It can adapt on the fly easily to carry a bigger load if necessary and securely holds the gear inside. Other favorite piece is the sheer simplicity of the pack. It has everything you want and that's it, nothing more nothing less. Longest approach I have done with it is 1 hr, and it felt fine holding everything listed above. My back didnt hurt at all after that approach. Cinches down nice for the second climber to follow wearing it. Patagonia definitely did this right.