“solid day pack”

“While this may not be the easiest pack to use or fill, it does accomplish one thing extremely well -- it keeps your back ventilated and mostly dry! And -- as it turns out, I actually use the pack because it's comfortable! The curvature of the pack takes some getting used -- and you do have to make some space concessions! But the arched back allows for great back ventilation. If you don't perspire much from you back, you'll be fine with a "regular pack" that sits on your back. As for me, this is a "backpack" that I actually use because it lets my back breathe. Everyone is different and comfort is a personal decision!”