This pack is great. I bought the pack a day before hiking a 14er (Castle Peak) and was excited to put it to the test. I was able to stash a rain jacket, rain pants, fleece, DSLR camera, small tripod, 3L of water (in a camelbak), and some clif bars. On the outside, I had my rock helmet and ice axe (after adding a rope on the bottom loop). The pack felt great even loaded down. It took the abuse of glissading down avalanche chutes on the way down as well.
Overall, I was VERY impressed with this pack. This is a great choice for day hikes, one day climbs, and over-night trips (if packed right).