The ortlieb heavyweight drybag proven on tracks and trails around the world ps490 dry bags are versatile and durable made with one of ortliebrsquos strongest heavy duty fabrics they can withstand just about anything they feature a roll down closure with stiffener bar a tough base that makes packing easier than ever and d rings for securing inside a boat or on top of a luggage rack the ps490 bags are designed for extreme applications and are even used as haul sacs all sizes 59 li