Vissla North Seas 18L Dry Backpack How Tall Is Chevy Chase? Height Comparison! YouTube. North Seas 18L Dry Backpack Sleek, durable drybag for your valuables. Whether youre on safari or stepping out the office, it gets the job done. The features: polyvinyl front and back panels with 600D PU coated side panels and fully welded seams. Design includes water resistant front pocket and mesh side pockets. Top of bag is designed to roll shut and clip secure with nylon buckle to keep contents dry. Backpack features Visslas Air Crossover padded back to keep moisture away from your back. 30x18x73cm. 100% POLYVINYL CHLORIDE