Vango dry bag 30 the vango dry bag 30 is perfect for lining your rucksack on trips where it is likely to get wet and keeping items separated and dry inside larger bags the roll top closure system effectively seals the dry bag against any encroaching water making it ideal for cycling kayaking and wet weather trekking activities on and around water when you still need to keep items safe and dry more info lightweight high quality fasteners with hypalon webbing for strength roll top dr