I took this pack on what was to be a 3-day, 70-mile hike on the Laurel Highlands Trail in western PA. The first day had beautiful weather over 24 miles. The pack, although extremely lightweight at just over 2lbs, securely held everything I needed it to - 25lbs including water total. I did not have the shoulder straps adjusted well enough and the weight of the pack sat too high. Therefore, the tops of my shoulders got very sore. If you don't properly adjust this thing, you will hurt. Even then, iSee full review