OR's most rugged dry bags have seams that are radio frequency welded for maximum strength and H2Oproofness; the Outdoor Research Lateral Dry Bag features a roll-top closure to ensure the H2Oproof seal. With a clear window that runs lengthwise across the bag, being able to view the bags contents in a deluge is key to finding the one piece of gear you want without getting everything else wet. The horizontal construction enables you to find gear more easily with a wider opening and a more shallow depth. Compression straps, two on the ends and two around the body, cinch bulky loads down small.