The PS 490 dry bag is extremely versatile and durable since it's made with one of Ortlieb's strongest heavy-duty fabrics. The PS 490 features a roll-down closure with a stiffener bar, a tough base making packing simple, and D-rings for securing the bag inside a boat or on top of a luggage rack. The bag is designed for extreme applications including utilization as a haul-sack. All of the sizes 59L and above feature additional side handles. The black-lime model contains a valve for compression and easier packing.