Many know the quality of Kelty backpacks.
This is a great backpack with lots of deep pockets, plus many adaptable/revisible options -- one shown extending the top. While some choose frameless packs, the beauty of an H frame is that it breaths more effectively, and with the frame it's easy to add tie-on rings, clips, etc. (Note 2 side rings, positioned on the frame pins and easy to reposition.)
As you view the images, notice the supper stong and comfortable staps, especially the waste band.