Zippered duffels are water resistant at best. These roll top Dry Pak duffels take waterproof to a whole new level. Shut out water by rolling down the top a few times and snapping the side release buckles together. Unroll and open to enjoy the huge tapered access opening on top. Items are easy to pack and easy to retrieve. Theres a convenient water resistant zippered pocket with storm flap on each side, one clear, one opaque. Quality manufactured from extra heavyduty vinyl/polyester laminate with electronically welded seams; there are no leaky sewn seams to seal.