Overboard 40 litre dry tube bag thanks to our easy to use fold seal system and welded seams this 40 litre dry sack is 100 percent waterproof and protects your gear from sand and dirt too its suitable for quick submersion and even floats on water so you can chuck it overboard without ruining your prized possessions and if things do get a tad rough out there dont worry weve made this waterproof dry bag of sturdy nylon coated pvc tarpaulin which is super durable and wipes clean easily complete