I live in Australia which is a harsh country, and just about everything in the bush and the weather wants to kill you so good gear is a must because your life depends on it. I researched this pack in detail in that I do a lot of hiking and hunting, and like a lot of hunters are moving away from military packs to ultralight. This pack is great and a 2-3 day bag, I have to admit this pack is usually filled to max but it seems to carry everything well. I am 6 foot and athletic and a medium just fits me. I found that every filled to the max the pack was still comfortable and I often forgot I was wearing it. I really love the external pockets and lashing straps for tent and sleeping mat. In summary this is a great bag, I took a risk in buying from the US because there are returns from Australia and am very happy with it. I don't think there is any other bags out there that competes with this except some Gossamer Gear products.