This backpack is unparalleled for comfort. I have significant shoulder and back problems, and I have been through a bunch of backpacks, finding nothing but pain with each one. This backpack literally feels like nothing on my back. It is almost magical. I can load the backpack up with my heavy textbooks, laptop and lunch, and it hardly feels like anything as I hike up and down the hills in my town. The only downside: I wish they made a backpack with this wonderful harness system but with a more student lifestyle pocket system. Other reviews mention a squeak - there is a squeak but I hardly notice it at all.