The Arc'teryx Noas 55 Pack is a great pack to use on longer trips. It can handle anything that mother nature has to throw. I used this pack on a 3-day trip and I loved it. I was able to carry everything that I needed and more without the worry of ruining anything because of water. I love the dry bag design of the bag as well. Not only does it make it a very secure bag, but it also makes it a very waterproof bag. On top of that, Arc'teryx has waterproof that top off the waterproofing of the Noas. This pack is also very adjustable, from the hip straps to the shoulder straps to the back support.