I picked this pack up for ski mountaineering. It does a good job of carrying everything I need for the day, but not much more. I purchased the 32L over the 40L for a couple of reasons though- the 40L has a different hip pocket design, the 32L has a "gear loop" which is really nice when you're building an anchor and playing with gear, it makes it really easy to clip gear right there, and not try to find the gear loop on your harness under your jacket and layers. Also, the "suspension" doesn't change on the 40L, if I'm going to be adding more weight to the pack, I would like to see burlier carrying as to carry the load better, but that's my personal preference. For a 40L pack, I would look at Mystery Ranch's Patrol 45L if you're are looking for a larger pack that will carry that weight well. Overall I'm pretty happy with this pack. Avi pocket fits all of my gear with minimal organizer loops in there. The main pocket fits all of my gear- rope, harness, crampons, layers, water, etc... The cinch collar is nice, makes for a large opening accessing your gear, plus it has a side zip to access everything. Carries skis in an A-frame ok-ish could be better, could be way worse! Top pocket on the lid is small but fits the random daily stuff.