Outdoor Research's Dry Isolation Backpack stows inside an included stuff sack that's smaller than a can of beer so you can take it on any backpacking trip. A fully taped, PU-coated construction makes the Dry Isolation ideal for trips with wet weather in the forecast, and the roll-top closure offers the same waterproof seal that dry bags for kayaking have. This backpack has a capacity suitable for long side trips away from camp.