this is a super good pack with an ungodly amount of little features and a hella lot of straps and pockets, it has a really good size sleeping bag compartment that fits the Mountain Hardwear Lamina minus 15 degrees sleeping bag inside of it, but that is a huge bag and it still takes up room that you wish it wouldn't (i have the Medium Sized Backpack.).. it will fit a 2 man tent and a good bag in there with a few other things in there. also, this pack is sooo comfy its almost unreal! has a removable hydration sleeve that has shoulder straps and a couple of small pockets so it can be used as a very small pack on its own maybe for some food and snacks. the lid comes off and can be used for whatever you want, i'm sure some use it as a pillow.. the back panel is pretty adjustable which is a nice feature, you can slide it up and down to get the pack at the right height on you back to suite you. it also has zips here there and everywhere so you can get to any part of your pack at any time, there is a zip that runs from the top to the bottom of the pack on the left front side that goes directly in to the main pack compartment. ugh there are a lot of good things about this pack but i'm getting bored of typing now!! BOTTOM LINE: Buy the pack, its great!

I'm an avid backpacker. I love being in the woods for days on end, and with this pack you will too. This pack will hold all you need for the long haul. From stoves to sleeping bags, and tents to t.p. this pack will hold it all. My friend has the summit series Catalyst 75, and he likes mine just as much as his. Get this bag and meet me in the woods!

I tried on a bunch of packs and kept coming back to this one. If you have extra money to blow then get the catalyst, but it sure didn't feel like a hundred-dollar difference to me. I love this pack. The suspension is sweet because it has a space for your spine so it only actually touches it in the lumbar area. Highly recommend.

Fast service. This pack holds everything you could possibly need for extended trips up to a week. Many pockets throughout. Comfortable. I went with the 22" because of my height. Just took a week hike on the AT and I'm satisfied.