I have this pack plus the other two optional bags for it, the AR2 and the Bog. Those were very inexpensive compared to a full pack, so I basically have three packs for the price of one-and-a half. If I am carrying a bear can, the AR2. If it’s going to rain, the Bog. Otherwise the Exoti 50. They are all really well designed and made. I really like the proper air gap you get behind your back. The side pockets are difficult to reach, so you might want to add some bottle holders on the shoulder straps. That’s the only criticism I can think of after several years of owniership.