you can have the best backpack in the world, but really, are your stuff safe from common threat such as water? we bet not. this where you will find the Overboard Pro-Sports Waterproof Backpack a welcome change. its design has only one goal: keep those endangering liquid out of whatever you have stuffed within it and to do that, it has a zip-less design, a seamless electronically-welded construction – rated at class 3, and a two-way fold seal system. apart from water, the bag is totally sealed against dust, sand, and dirt too. making this the must-have backpack whether you an urban warrior, or backpacking through the mountains of Kathmandu. the Overboard Pro-Sports Waterproof Backpack has been around for a while now, but still we think it is worthy of another mention for both what is capable of and also for its beauty. as far as storage is concerned, it offers a large front mesh zip pocket, a large outer elasticated mesh side pocket, as well as an internal zip pocket. other features include padded shoulder straps and lumbar support, a comfy back panel with air-flow design, a large mesh zip pocket up front, adjustable sternum strap and waist belt, and reflective strips thoughtfully located on the front of the pack, as well as shoulder straps, making sure you are all visible when trotting along in cover of darkness. and if things get a little out of hand and went overboard, this bag stay afloat on water too. available in a choice of 20 liters and 30 liters model, the Overboard Pro-Sports Waterproof Backpack comes with a starting price of from $61.99 a pop.