The Osprey Crescent 110 provides maximum support allows for comfortable hauling over difficult terrain.
Osprey's largest-volume backpack is the Crescent 110 Backpack, an ideal choice for mountaineering and backpacking expeditions. Thanks to its beefy suspension, you'll be able to comfortably carry 70 pounds of clothing, gear, and food. Osprey's ReCurve suspension features sturdy aluminum stays that anchor into the hip-belt, a framesheet with cutouts to reduce weight, and aluminum rods that provide stability and shock absorption. The stays and rods slip into aluminum sleeves that attach to your harness and hip-belt so as to allow these stays and rods to independently flex and pivot as you climb, hike, and descend. A mesh back panel allows for breathability, and the foam-padded harness and thermo-moldable hip-belt evenly distribute your load. Pack your sleeping bag into the easy-access sleeping bag compartment, top load the rest of your gear, and shove small items into the Crescent's various other pockets, including a zippered top pocket that converts into a fanny pack. Also, detach the included hydration sleeve and carry it as a daypack.
Lots of bells and whistles, but very durable. There are a lot of ways to make it very comfortable. Make sure you adjust it to your frame, or you will feel the pressure points by the evening. I did not fuss around with the oven thing they advertise, just adjusted it to the load. It worked very well. It's is a heavy bag though. If you are a minimalist you would probably pick up something else.