The Pathfinder 5 Liter dry bag is useful far beyond just protecting your gear from rain/wet conditions. The size is excellent and easy to carry for a day hike. From water collection"" to use as a flotation device"" a pack liner"" pillow"" a dry mat for processing tinder"" or dry surface to kneel on...the list goes on and on. The dry bag is one of the most versatile pieces of gear you can carry. Also a perfect companion to the Pathfinder 64oz Bush pot.