I know that this pack got its start as a ski mountaineering/touring pack, but I find it great for backpacking also. Many of the ski specific features that set it apart from normal packs can easily be used for general backpacking gear. The probe pocket is a great place to store tent poles, or an ultralite camp stool. The huge kangaroo pocket on the front of the pack is great to stash wet gear like rain clothing, tent flys, tarps, and because it is totaly seperated from the main compartment it won't get the rest of your stuff wet. The side zipper access to the main pack is real nice to grab items on the go, and the roll top closure is fast to adjustable to handle any size load. The pack isn't submergable, but other than that it is totaly waterproof. My has withstood five hours of heavy continuous rain without leaking. The suspension is the most adjustable pack out there, not only adjusting for torso length, but shoulder width as well. This baby will handle even the most heaviest of loads, and shares the same suspension as some of Arc'teryx expedition packs. It will move with you almost as if it is part of you thanks to the swiviling hip belt. It a little heavy, it isn't the pack I use all the time, but when all hell is about to break loose I go for this baby. Its stated volume is very conservative, I think they only count the main compartment, but the kangaroo pocket is at least one third of the main compartments size. I mainly use this pack in winter or for longer trip due to its size. I tend to be a light weight backpacker, and I can fit four season gear and food for a week in this pack. Hands down this is the best pack I have ever owned, including some of the best offerings from Osprey, Gregory, and even other Arcteryx packs like the Naos and Altra.