Prior to using this pack i was very used to the conventional internal/lightweight frames. I was looking for a pack to carry a little more load and be sturdy, but still be very lightweight. The Harrier more than pleased me on my first trip with it. Although it took me almost two hours to fit to my body, it paid off in the long run. The pack functioned precisely up steep accents and long decents. I was carring a little more than usual at about 60 lbs and it felt like alot less and i had no blisters. i would recommend this pack to anyone having to carry a slightly heaivier load and still have the speed and agility of a small pack.