Been quite pleased with my Skog A Kust BACKSAK. I got the 35 L size for like 66 bucks. Watereproof PVC with welded seams. Nice padded back support and comfy, strong straps. Sturdy fasteners. Well-made. If water is an issue where you are, it's worth looking into. Nary a drop will reach inside the BACKSAK. I do believe it is a very good value at its price-point when compared to some of the more famous brand names out there. Not sure those are built any better.