The 13 Litre Medium Weight Drybag from Ortlieb is a premium quality drybag that has a proven roll closure & single stiffener bar to ensure 100 waterproofness & the design of the bag offers maximum packing volume This Medium Weight Drybag has a reinforced base for increased stability & an easy to clean inside making it ideal for a wide range of uses to keep your kit dry Ortlieb Drybags are incredibly well made reliable durable & of course waterproof they are manufactured using the highest quality premium fabrics to offer you the best drybag These drybags also roll away neatly so that they can be easily stored when not in use