They advertise this pack as not needing a pack liner? My second pocket is also zippered shut. They say because when you un zip the back pocket ,usually see threw stretch material, you open the pack to the main pocket and it does make it easy to get to stuff in your big pocket. It is all made of dynema, or cuban fiber. So I have my sleeping bag and other items I don’t want to get wet? Is this safe? I would hate to go on a fall or winter
Ike conditions and find everything inside wet after a rain storm. Does anyone have any experience with this? Am IÂ worrying for nothing?

