I love this pack. Its very well built. I have put a lot of abuse on this thing for the last two years. Its been everywhere from snowboarding at brighton to zion narrows to day hiking in the Uintas. I'm glad we finally picked this guy up. However, I think this is in the wrong category. This is a day pack through and through.
weatherproof (resistant?) camera bay zippers with a couple of dividers. it fits my 60D with 17-40L and spare lenses - 50mm prime, 15mm fisheye and either my tele or macro lens. The top compartment has plenty of room to stuff for a full day hike. I've stuffed lunch, jacket, extra camera equipment and other various items in there without issue. This also has a dedicated bladder pocket, it fits my 100oz (3 liter) bladder like a glove. It has plenty of small compartments. Small one on the very bottom of the pack that I keep my batteries, memory cards and other various things in. a small one that I don't use by the camera block, one on the top filled with microfiber for sunglasses, filters and my cable release. There's also another zipper right next to the mesh pocket on the back that I keep my lens cleaner stuff in.
My complaints, as no pack is perfect
1.the orange plastic things on the zippers are flimsy I've broken off two. It doesn't affect anything though is its no big deal.
2. the mesh pocket on the side that holds the tripod is not that durable. I wore a hole through it last summer so I had to reinforce it with some good ole gorilla glue its been bombproof since, but future versions hopefully will address this.
As a side note, looks like clik has made some minor changes to the pack since I got mine 2 years ago (the back pocket looks a tad different, and mine doesn't have a rain cover)