The ps 490 drybags are the strongest and heaviest duty waterproof dry bags that ortlieb make which is why they are relied on in countless expeditions the world over super strong and reliable they feature a roll down closure supported with a stiffener bar to make packing as easy as possible there are d rings to allow the bags to be secured in transit plus a base loop to aid unpacking for added convenience all models 59 litre and above now come with additional side handles height 75 cmcirc