Sleek dry backpack. The Vissla North Seas Dry Backpack is constructed with durable polyvinyl front and back panels, 600D PU coated side panels with full welded seams. Design includes water resistant front pocket and side pockets. Top of bag is designed to roll shut and clip secure with nylon buckle to keep contents dry. Backpack features Vissla's Air Crossover padded back to keep moisture away from your back.