No zips means no leakage, so this waterproof sports bag has a seamless electronically-welded construction & a simple to use two-way sealing system, making it fully submersible. From the large front mesh zip pocket to the padded shoulder straps & air-flow back panel, this feature-packed Overboard Waterproof Backpack is a comfortable & handy bit of kit for any water-based sportsman. Roll-top 100% waterproof sports bag (Class 3) Floats safely if dropped in water Protects contents from dust, s&, dirt & water Unique ‘ High Frequency’ welded construction Two-way sealing system (top or side) Padded shoulder straps & lumbar support Comfortable back panel with air-flow design Large front mesh zip pocket Super reflective strips on the front of the bag & both shoulder straps Adjustable sternum strap & waist belt Large outer elasticated mesh side pocket & a top carry handle Large internal zip pocket&65279;