I just completed my first ever backpacking trip, with a 50 pound pack for 4 days in Alaska, approximately 7 hours each day. I am on the petite side - 5'2", 108 lbs. I tested out a couple of other packs and ended up with either shoulder pain or lower back pain. The Women's Granite Gear was a dream. The straps and belt can be cinched down very tightly for a very small torso like mine, holding the pack firmly to my body, which helped make the pack feel MUCH lighter than it actually was. the adjustable frame is a great feature. I set it to the shortest setting and the pack sat right above my hips. The front zippered pockets are very roomy, with room for my 30 oz Nalgene and room to spare. the bag can be filled all the way to the top, and almost over the top, because the top straps cinch down very securely so you don't have to worry about losing anything. Some people mentioned an issue with the pack hitting the top of their head. I did not have that problem. the pack has TONS of adjustable straps to secure items all around the outside if needed. It also has large open pockets at the sides which held my tent and camp chair. My favorite part of the pack is the removable day pack. I think it's meant to be attached to the straps to sit across your chest. I clipped it to my belt loops and used it as a fanny pack and it was great. It's not huge but large enough to carry my Nalgene, phone (camera), sunblock and snacks. I even continued to use it on the days I was wearing my heavy pack because it was so useful. The pack was more money than I was looking to spend but worth every penny! I believe it made the difference between having a really enjoy trip and a really uncomfortable trip.